Problem: How does the sentence end?

The lecture failed to convert him, but the essay convinced him to change, as the 
OPTIONS:
- lecture was unconvincing.
- essay was unconvincing.
Answer: lecture was unconvincing.

Problem: How does the sentence end?

Sarah started the car and then drove to pick of Jessica, because 
OPTIONS:
- Sarah was needing a ride.
- Jessica was needing a ride.
Answer: Jessica was needing a ride.

Problem: How does the sentence end?

Sally knew not to ask the doctor for antibiotics when her illness was caused by a virus rather than bacteria. Only the 
OPTIONS:
- virus would respond to antibiotics.
- bacteria would respond to antibiotics.
Answer: bacteria would respond to antibiotics.

Problem: How does the sentence end?

Kyle asks for an advice from Derrick on how to wear a jean jacket, because 
OPTIONS:
- Kyle is extremely fashionable.
- Derrick is extremely fashionable.
Answer:
Derrick is extremely fashionable.