Which of the following options show parallel construction?
a. “being happy,” “being sad,” and “being depressed”
b. “telling a story,” “being informed,” and “the end”
c. “face the music,” “dancing in the rain,” and “show your stuff”
d. “to get rich,” “getting lazy,” and “being happy”

A parallel construction refers to the fact that the same form of a word or phrase is used in all of its examples. So, having this in mind, the correct answer is A. being happy, being sad, being depressed, because all of these constructions have a gerund being + an adjective. The other examples aren't as uniform as the first one is, which is why they are not parallel.