B. Envision i just had the same question and it was correct
A. Transportation planner Sarah Reidel believes that companies need to encourage employees to take alternate means of transportation, telecommute when possible, and work abbreviated schedules.
Parallel structure is when there is a consistent use of the same grammatical structure. This is especially important when writing a list. In the sentence, the author lists the three things companies can do to help with the transportation problem. The verb structure needs to be the same. Option A is the only choice that has a similar verb structure for encourage, telecommute and work. Other options vary the verb structure sometimes using verbs that end in -ing while others do not. These do not have parallel structure.
