Question

3. He does not take a walk in the garden; neither does he allow anybody else
to do so. He has a dog in the manger attitude.
'A dog in the manger' means
a. keeping a watch over what is yours
b. preventing someone from having or using what you yourself don't use​

Answer 1

b.) Preventing someone from having or using what you yourself don't use.

Answer 2

Answer:

preventing someone from having or using what you yourself don't use

Explanation - he does not use the Garden neither does anyone else to walk on the garden so he keeps a dog to prevent someone from having to use what he himself does not use so I am sure this answer is correct