You may want to write in English so we can understand what your trying to say !
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:
Yo llegué a un lugar nuevo cuando fui de vacaciones el año pasado.
#2 is- El es el director de la escuela.
#3 is- I study science and work at a laboratory.
