Correct Answer: (d) who commuting long distances
Solution:Use "who commute long distances" in place of "who commuting long distances".- Who is the relative pronoun here.
- The antecedent for who is "jobs".
- According to the pronoun rule the verb used after the relative pronoun(who) will be according to the antecedent (jobs) so the verb will be plural and "commute" will be used.
- So, "People with full time sedentary jobs who commute long distances, may have sleep problems due to lack of exercise" is the correct sentence.