To determine the best answer for the question of what proportion of fatal collisions occur on roads with posted speed limits of 55 mph or more, let's carefully analyze the descriptions of each multiple-choice option:
a) One-quarter: This means 25% of the total fatal collisions.
b) Half: This means 50% of the total fatal collisions.
c) Three-quarters: This means 75% of the total fatal collisions.
d) All: This means 100% of the total fatal collisions.
The question mentions "Slightly more than half," which implies just over 50% of fatal collisions. Among the provided options, the one that best fits this description is:
b) Half
This is because "half" refers to 50%, which closely aligns with the notion of "slightly more than half" and is the most reasonable choice among the given options.
