The airport's runways are too close

Answer choices

1. A

   Too Strong13% picked this

   In poor weather, only half as many planes are allowed to land each hour on any one runway at the airport as are allowed

   The statements permit the possibility that one runway is completely shut down in bad weather and so the other runway has just as many planes landing each hour as it did before.

   13%
2. B

   Too Strong14% picked this

   When the weather at the airport is good it is likely that there are planes landing on two adjacent

   This depends on how long it takes for each plane to land. More importantly, the part that says “at any given time” goes too far since it could be the case that planes are staggered on both runways such that it’s never the case that planes are landing on two adjacent runways at the same time.

   14%
3. C

   Unsupported Relationship1% picked this

   If any two of the airport's runways are used simultaneously, serious

   In good weather simultaneous use of two runways does not lead to serious delays.

   1%
4. D

   Correct68% picked this

   Airlines using the airport base their schedules on the assumption that more than 30 planes an hour will be allowed

   Why this is right

   Because airline schedules assume good weather (fourth statement) and 60 planes an hour are allowed to land in good weather (third statement), it follows that airline schedules assume that more than 30 planes an hour will be allowed to land.

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

   68%
5. E

   Unsupported Relationship5% picked this

   In good weather, there are few if any seriously delayed flights

   While good weather makes it less likely that there will be any seriously delayed flights, it does not go so far as to say that there will be no (or almost no) delayed flights.

   5%