Ellas responden is the correct conjugation
Hey man/girl, I would love to help you, but I cant when we cant hear what its saying, so therefore we cant help you unless you somehow post a recording of how it sounds so we can tell you the answer, I'd be happy to help, just post a recording or send a message of the recording so I can tell you the answer
Hay tres mangoes en el alrbo
Hay Caballos alla
Hay mucha jente aqui
A. Hearing
B. Falling
C. Building
D. Running away
It doesnt make a lot of sense but i think its D