Question

1. trucks, because of their large size, give the appearance of moving ______ than they actually are.

a. faster

b. higher

c. slower

d. lower

Explanation:

To solve this, we analyze the context of truck size and perceived speed. Larger objects (like trucks) often appear to move slower than they actually do due to visual perception—our brain processes their movement relative to their size. "Faster" would contradict the size - perception relationship. "Higher" and "Lower" relate to elevation, not speed of movement, so they are irrelevant here. Thus, the correct option is the one that fits the perception of large - sized trucks' speed.

Answer:

C. Slower