Which option best revises this sentence so that it uses parallel structure?

Transportation planner Sarah Reidel believes companies can improve traffic and help the environment by encouraging employees to use alternative means of transportation, providing telecommuting opportunities, and rewarding employees who take advantage of these offerings.

To create a parallel structure, each part of the list should begin with 'by' followed by a gerund, ensuring that each strategy to improve traffic and help the environment follows the same grammatical pattern.

Explanation:

To revise the sentence "Transportation planner Sarah Reidel believes companies can improve traffic and help the environment by encouraging employees to use alternative means of transportation and provide telecommuting opportunities, as well as reward employees who take advantage of these offerings." with a parallel structure, we need to ensure that all items or actions listed are in the same grammatical form.

Here's a revised version using parallel structure: "Transportation planner Sarah Reidel believes companies can improve traffic and help the environment by encouraging employees to carpool or use public transit, by providing telecommuting opportunities, and by rewarding employees who take advantage of these offerings." Each strategy to improve traffic and help the environment is introduced by 'by' followed by a gerund (-ing form), ensuring parallel structure.