a. 85 km/h.
Work Step by Step
Usually, the drive rate on an interstate highway is around 100 km/h. Thus, the best answer is (a), 85 km/h. Answers (b) and (d) are too slow, while (c) is too fast.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.