Hey there!
Here is your answer:
The proper answer to this question is option A "mood".
Reason:
Balloon has the same root sound (oo) as mood, and wood (option A & C) but the sound of the W in wood makes it sound less similar from balloon therefore mood sounds the closest to sound like balloon!
Therefore the answer is option A!
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
