Choose the sentence that uses parallel structure correctly.
a. she will either go to the party or stay home and rest.
b. he not only completed his homework but also his chores.
c. the team not only plays the rangers, but also the cougars.
d. not only did tom miss the practice neither did he make the game.

The sentence that uses parallel structure correctly is:

A. She will either go to the party or stay home and rest.

Explanation:

The parallel structure is a grammar rule that establishes order and categorization. It is used to represent the same level of importance as two elements. In our case, we are talking about the same level of attraction of those activities to the subject. We can say that this is the correct answer because the word "either" shows the same level of importance.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

explanation:

it refers to the definition of full-contact sports, where the condition is that the sport must have athletes must "purposely collide with each other