Which of these following sentences has correct parallel structure? a. erika likes swimming, baking, and to read. b. erika likes to play tennis, hike, and to play guitar. c. erika likes jogging, hiking and reading. d. erika likes to sing, to dance, and play the guitar.

The correct answer is C. Erika likes jogging, hiking and reading.

Explanation:

In language, parallel structure occurs as there is a similarity in the grammatical forms used in elements of the same importance. This means a specific grammatical form is used to present a set of elements in the same sentence, for example, "I bought three books, one apple, and two pens" uses parallel structures because each element contains a number followed by a noun. This implies, the sentence that has a correct parallel structure is "Erika likes jogging, hiking and reading" because in this all the activities "jogging, hiking and reading" are included using -ing forms.