Is there a story of Juan and Pedro to read before answering this because i havent red about them.
The answer is (acabe) because it refers to the fact that he has not finished his studies and when he finishes it he could finally be an astronaut.
The answer would be C. lo.
No mucho, pero si lo como cuando quiero.
Not much, but yes I eat it when I want.
It would not be me because the phrase "me como cuando quiero" would mean "I eat myself when I want"
It would not be te because the phrase "Te como cuando quiero" would mean "I eat you when I want" it also has inappropriate meaning.
It would also not be la because when you say "it" you are referring to helado. Helado is a masculine word, so you would use lo, a masculine pronoun in the sentence.
I hope this helps!
Answer: Mantenerse en forma (translation: stay in shape)
Explanation: The translation is: My grandma wants to____to be healthy.
The options are
1. Eat sweets
2. Stay in shape
3. Have stress
4. Drink sodas