Which of the sentences below uses parallel structure? each of the stories has strong protagonists, timeless themes, and has realistic conflicts. each of the stories has strong protagonists, has timeless themes, and has realistic conflicts. each of the stories has strong protagonists, the themes are timeless, and has realistic conflicts. none of the above.

its hard for me to see which word is supposed to be in bold. if i knew then i would be able to better.

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)

d. lennie pats too hard, and then panics.