#11 - Local, False to True

[Administrator]

Complete Question Explanation

The correct answer choice is (C).

Answer choice (A):

Answer choice (B):

Answer choice (C): This is the correct answer choice.

Answer choice (D):

Answer choice (E):

This explanation is still in progress. Please post any questions below!

[Jazvences]

Hi! Could someone explain why C is correct over A? Thank you!

[Luke Haqq]

Hi Jazvences!

We're told that H is the second street cleared by plow 1:

1: _ H _
2: _ _ _

From this, we also know that plow 1 must also plow G, since the same snowplow clears G and H (rule 2). We're also given that plow 1 clears K. So we know all three roads that plow 1 clears, although we don't know the order of G and K. Thus far we have:

1: G/K, H, G/K
2: _ _ _

We know the remaining 3 variables that plow 2 plows--J, L, and M. We also know from the 1st and 3rd rules the order of these. M goes first, and L must be before J:

1: G/K, H, G/K
2: M, L, J

This arrangement confirms that answer choice (C) could be false. K doesn't have to be the 3rd street that plow 1 clears. It could be the 1st street instead.

In addition, the above arrangement confirms that (A) must be true. Since (A) must be true, we can eliminate it, since this question asks for what "could be false"--so the four incorrect answer choices must be true.