Which sentence would improve this conclusion?

Organizing safety classes for drivers and cyclists will ensure that everyone knows the rules

B—Organizing safety classes for drivers and cyclists will ensure that everyone knows the rules.

Explanation:

B is the correct choice as it further supports bicycle riding and is a block against the opposing argument that some people may break rules while either driving or cycling. By the process of elimination, A, C, and D would not support the conclusion as well because it doesn't add anything strong to the argument.