40. One reason an intersection is high-risk for collisions is that intersection design encourages some motorists to drive __ a. without looking all directions b. at a reduced speed, holding up traffic c. carelessly d. aggressively

c. carelessly

Intersections can be high-risk for collisions because their design may lead some motorists to drive carelessly. This can include not paying attention to signals, failing to yield the right of way, or making improper turns, all of which increase the likelihood of accidents.