Combine the following sentences into a single compound sentence:
pauline frowned at the newspaper. she threw it down in frustration.
o throwing down the newspaper, pauline frowned at it.
pauline frowned at the newspaper, throwing it down in frustration.
o pauline frowned at the newspaper, throwing it down in frustration.
pauline frowned at the newspaper, and she threw it down in frustration.

The compound sentences are used to connect the independent clauses. The sentence can be best written in the compound form by adding the word 'and' between the two clauses. Thus, option D is correct.

What are compound sentences?

Compound sentences are used to link and interconnect the two independent clauses mentioned in the sentence by using the coordinating conjunctions like, and, but, or.

Here, the given sentence can be converted into one sentence as a compound form by adding the coordinating conjunction, and between the words newspaper and she.

Therefore, option D is the compound sentence as it has a coordinating conjunction.

Learn more about compound sentences here:

https://brainly.com/question/14130017

#SPJ1