Logical Reasoning

PT142 · S1 · Q20 If the city builds the proposed convention

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If the city builds the proposed convention center, several national professional organizations will hold conventions there.

Conclusion

Building the convention center will increase the city's tax revenues.

Evidence

If the number of visitors increases, the tax revenues will increase.

If several large conventions are held in the city, then the total number of visitors will increase.

And if we build the convention center, then several national professional organizations will hold conventions there.

Evaluate

We see a lot of conditional logic and overlapping terms in the Evidence and Conclusion, so this could be a good contender for diagramming the logic in order to find the missing link.

Since our conclusion is trying to get from building the convention center to increased tax revenue, we can represent that with a big arrow.

Build more convention → tax center rev

That's the logic connection we're trying to create. The premises give us a series of three ideas that get us to that endpoint: several large number of more conventions → visitors → tax held in city increase rev

And there's a conditional that almost connects "build convention center" on to this:

Build several national convention → professional organizations center conventions held in city

Goal

The only thing missing here is that is not identical to "several large conventions are held in the city".

We need to know that these "national professional organization conventions" would be "LARGE conventions".

20.

The conclusion of the argument follows logically if which one of the following is assumed?

  1. If the number of visitors

    Unrelated to Goal

    There's only one thing we're interested in finding — "these conventions that would be held by national professional organizations" will be "LARGE conventions". This answer just takes a conditional we already had and negates both ideas.

    6% picked this

  2. If the number of visitors

    Unrelated to Goal

    There's only one thing we're interested in finding — "these conventions that would be held by national professional organizations" will be "LARGE conventions". We're already guaranteed that if the number of visitors goes up, then tax revenue goes up. This answer seems to be trying to extra-convince us of that, but we already have that relationship established.

    23% picked this

  3. The city's tax revenues will

    Unrelated to Goal

    There's only one thing we're interested in finding — "these conventions that would be held by national professional organizations" will be "LARGE conventions". This answer just does an illegal reversal on the conclusion. The conclusion was if convention center, then increase tax revenues and this says if not convention center, then not increase tax revenues

    7% picked this

  4. People who are now regular

    Unrelated to Goal

    There's only one thing we're interested in finding — "these conventions that would be held by national professional organizations" will be "LARGE conventions". We already know that if we get large conventions, we're guaranteed total visitors will increase, whether or not that involves current visitors continuing to come or no longer coming. In either case, the net effect would be more visitors, according to the provide rule.

    7% picked this

  5. Correct

    If several national professional organizations

    Why this is right

    This was the only missing detail. Here is us adding this fact to our premises. 1.If build center, several national pro orgs will have conventions 2. if several national pro orgs have conventions, they will be large 3. if large conventions are held, number of visitors will increase 4. if number of visitors increase, then tax revenue increases. We can now go seamlessly from the beginning to the end: if build center, then tax revenue increases.

    Skill tested: Sufficient Assumption · how this choice captures the argument's function is the move to repeat next time.

    56% picked this

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