Is "I really liked its theme" the only acceptable alternative to "I also very much liked its theme" in this exam question?

Question

I really enjoyed the way the fashion show was executed and I also very much liked its theme.

1. Its theme conveyed.
2. I really liked its theme.
3. No improvement.

It's my exam question and provisional answer key suggests option 2. But I can't understand what's wrong with 1&3.

Answer 1

From you original sentence

I really enjoyed the way the fashion show was executed and I also very much liked its theme.

The first choice

I really enjoyed the way the fashion show was executed and its theme conveyed.

is ungrammatical, however

I really enjoyed the way the fashion show was executed and what its theme conveyed.

is possible.

I really enjoyed the way the fashion show was executed and I really liked its theme.

Is obvious as it conveys exactly the same idea of the original sentence.