#8 - Local, Except

[Administrator]

Complete Question Explanation

The correct answer choice is (B).

Answer choice (A):

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

Answer choice (C):

Answer choice (D):

Answer choice (E):

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

[roppo@ualberta.ca]

Hi,

Would you please provide a detailed explanation of the answer choice.

Thank you

[Paul Popa]

Hi Roppo,

Sure thing! So, this is a could be true EXCEPT question, which means that four of the answer choices could be true, but one of the answer choices cannot be true.

A) This could be true. If L the second street plow 1 clears, G can be the first plow 2 clears. For example:
P1: M L K
P2: G H J

B) CORRECT. This actually cannot be true. If H is the first street plow 1 clears, that forces G to be the third street which forces K to be plowed by plow 2, which violates rule 4.

C) This could also be true. For example:
P1: M L K
P2: J G H

D) This could be true. For example:
P1: K L J
P2: M G H

E) This could also be true. The examples for (A) and (C) support this. Hope this helps!