What was the question for this implicit rationale, and corresponding answer?
Vesicle transport requires energy, so it is also a form of active transport. Proteins leave the ER in transport vesicles 5. Proteins leave the ER via active transport.
 The answer: (F)
The question: How do proteins leave the er?
Options:
- (A) aqueous solution
- (B) it's state
- (C) Veins and arteries.
- (D) Move to another area
- (E) allow growth
- (F) active transport
- (G) It expands
- (H) movement