Parallel Structure

Which one is correct? The following can be done at a shopping mall:

Buying groceries, eating lunch or paying your bill

Buying groceries, eating lunch, and a bill payment sentence

Which one is correct? In your bedroom you can find the following:

A bed, a closet, and a sitting desk

A bed, a closet, and a desk

Which one is correct? Dogs are great pets for the following reason:

They are loyal, they are loving and because of their obedience

They are loving, they are loyal, and they are obedient

Which one is correct?

John likes driving, hiking and taking care of his dog.

My friend took me to a dance and a show.

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