Question

the student wants to revise a portion of the essay to more directly address the counterargument about costs of green changes. read the students drafted revision and then selection the transition word that would best improve cohesion of the two sentences. draft: \some adults worry that going green costs too much time and money. ___ many changes are free right now—turning off lights, opening shades, and stopping bus idling.\ a. therefore b. however c. for example d. meanwhile

Explanation:

The first sentence presents a concern (costs of going green), and the second sentence presents a contrasting idea (many green changes are free). A transition word that shows contrast is needed. "Therefore" shows a cause - effect relationship (not relevant here). "For example" is for giving instances (the second sentence is not an example of the first). "Meanwhile" shows things happening at the same time (not relevant). "However" is a contrast transition.

Answer:

B. However