Which of the following BEST uses parallel structure for the underlined part of the sentence?
Whether it is reading to a child or delivering groceries or meals to the elderly, they realize that someone expects them to be there.
Whether it is reading to a child, delivering groceries or meals to the elderly, they realize that someone expects them to be there.
Whether it is reading to a child, or delivering groceries to the elderly, they realize that someone expects them to be there.
Whether it is reading to a child or delivering groceries or delivering meals to the elderly, they realize that someone expects them to be there.
Leave it as is.