⟩ It can be inferred from the passage that after puromycin was perceived to be a disappointment, researches did which of the following?
1. They continued to experiment with puromycin until a neuron anatomical framework was developed.
2. They continued to experiment with puromycin, but also tried other protein synthesis inhibitors
3. They ceased to experiment with puromycin and shifted to other promising protein synthesis inhibitors.
4. They ceased to experiment with puromycin and reexamined through experiments the relationship between genetic information and acquired information.
5. They continued to experiment with puromycin, but applied their results to other facts of memory research.
Answer: C
