Answer:
B
Explanation:
Extraneous/incidental usually mean unimportant or has minor significance. Therefore, 'the completely unrelated information' from B best reflect what the the author mean by 'extraneous/incidental information'.
To exaggerate is to represent something bigger than it really is.
Given information is not enough to answer your question appropriately. Let me start explaining with the cases that we can extract from given information:
Case 1: Stacy was driving the car - in this case, Stacy was in driver seat.
Case 2: Someone else was driving the car - in this case, Stacy was in passenger seat.
