Answer:
The correct answer to the sentence is:
El médico pone una inyección.
Step-by-step explanation:
The sentence means The doctor puts _____
- Refriado means: a cold. Doctors don't give colds they cure them.
 - Pastilla means: pill. Pills is to give not to put.
 - Inyección means: Injection. This is the correct one.
 - Tos means: a cough. Doctors dont't put coughs.