Question 1 (2 points)
Which of the following sentences uses parallel structure?
A. To travel to Puerto Rico and doing a service project as a volunteer had been my dream.
2. Traveling to Puerto Rico and volunteering for a service project had been my dream.

3. Traveling to Puerto Rico and to volunteer on a service project had been my dream.
4. To travel to Puerto Rico and to voluntarily do a service project had been my dream.