Logical Reasoning

PT136 · S4 · Q17 Although Pluto has an atmosphere

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Although Pluto has an atmosphere and is much larger than any asteroid, Pluto is not a true planet.

Opposing Point

Although Pluto has A + LA an atmosphere and is much larger than any asteroid.

Evidence

Pluto formed in FAP orbit around the planet Neptune and was then ejected from orbit around Neptune when Triton, Neptune's largest moon, was captured by Neptune's gravity.

Conclusion

Pluto is not a true ~TP planet.

Evaluate

The argument TP → ~FAP assumes that true planets do not form around other planets.

17.

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

  1. No celestial body can simultaneously

    Too Weak

    The problem with M → TP this answer is that Pluto is not a moon since it no longer orbits Neptune.

    7% picked this

  2. Not all celestial bodies that

    Too Weak

    This supports the A + OS ↢some↣ ~TP view that Pluto is not a true planet but is too weak to ensure it.

    13% picked this

  3. If Pluto had not been

    Wrong Trigger

    Pluto was ejected from its orbit around Neptune, so this answer does not apply.

    8% picked this

  4. The size of a celestial

    Too Weak

    While this would preclude the opposing point from proving that Pluto is a true planet it is not strong enough to prove that Pluto is not a planet.

    5% picked this

  5. Correct

    For a celestial body to

    Why this is right

    This bridges the TP → ~FAP gap between forming within the orbit around a planet and not being a true planet.

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

    68% picked this

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