How can these sentences be combined to include a dependent clause?
The lifeguard was on duty. She pulled a toddler out of the pool.

A. The lifeguard was on duty; she pulled a toddler out of the pool.

B. The lifeguard was on duty, and she pulled a toddler out of the pool.

C. While the lifeguard was on duty, she pulled a toddler out of the pool.

D. When the lifeguard was on duty and pulled a toddler out of the pool.

What is the function of the noun clause in this sentence?
  whoever doesn't have a car will need a ride to the movie theater.

 A. indirect object
 B. appositive
 C. subject
 D. direct object