1. Choose the sentence variety strategy that is underlined in the sentence below:
Enron, the defunct energy company, was based in Houston, Texas.
O appositive phrase
O using a question
O coordination
O opening with an adverb
2. Choose the sentence variety strategy that is underlined in the sentence below:
Did you eher wonder what causes leaves to change color?
O using a question
O opening with an adverb
O appositive phrase
o coordination
3. Choose the sentence variety strategy that is underlined in the sentence below:
Incidentally, you owe $5 to the library in overdue book charges.

Sentence variety is the use of different sentence structures in order to make a text more interesting, avoiding repetition and improving the flow between ideas.

Let's break down the sentence variety strategies used in each of the sentence:

1. The phrase "the defunct energy company" is an appositive phrase. It provides extra information about the noun "Enron".

2. The sentence uses the interrogative form, starting with "Did you ever wonder...?" By asking a question, the author gets readers thinking about the topic.

3. The sentence begins with an adverb, "initially". Adverbs modify verbs, adjectives, or other adverbs. They too help add details to the sentence.

Learn more about sentence variety here:

https://brainly.com/question/23003340