Which is the best example of a moral imperitive or true mora

Which is the best example of a moral imperitive or true moral rule (as opposed to a social-conventional rule)?

Question 25 options:

Moral rules are all relative to the specific culture.

Say your prayers before you go to bed.

Treat others the way you would like to be treated.

Moral rules differ for people of different ages.

Always wash your hands before eating.

Solution

ans=treat others the way you would like to be treated

this is the best exampe as one can not be like to be harm by others so he should not do it to others.

moral rules are not culture specific or for own personal benifit always.so this is the best example.