Answer:
You're correct
You can alternatively sayおなかがすいたときにたべます。as well, but your sentence is perfect.
Kanji version of what you wrote would be: 私はお腹がすいた時に食べます。
Answer:
A
Explanation:
because you know how people say "Are you even hearing what I'm saying" while you can be listening but hearing plays a big part
1f= -a, -am, -ae, -ās
2m= -us, -um, -ī, -os
2n= -um, -um, -a, -a
3mf= (modified stem/various), -em/īm, -ēs, -ēs/īs
3n= -(modified stem/various), -(modified stem/ various), -a/īa, -a/īa
Present tense= -o, -s, -t, -mus, -tis, -nt
Hope that helps!