Identify the sentence that is punctuated correctly.

A. She is wearing a new yellow dress, and looks clean and neat.

B. The Kingdom of Bahrain has a settled well-educated population.

C. He thinks that an apple a day keeps the doctor away.

D. Working 9-5 daily, and keeping up with homework is difficult.

D

Incorrect.

The correct sentence that is punctuated correctly is A. "She is wearing a new yellow dress, and looks clean and neat."

To determine the correct answer, you need to review the punctuation in each sentence. Let's analyze each option:

A. "She is wearing a new yellow dress, and looks clean and neat." - This sentence uses a comma before the coordinating conjunction "and" to join two independent clauses. This is the correct use of punctuation in this context.

B. "The Kingdom of Bahrain has a settled well-educated population." - This sentence lacks any punctuation, making it incorrect. It could benefit from a comma after "settled" to separate two adjectives.

C. "He thinks that an apple a day keeps the doctor away." - This sentence is correctly punctuated. It uses a period to indicate the end of a complete thought.

D. "Working 9-5 daily, and keeping up with homework is difficult." - This sentence uses a comma before the coordinating conjunction "and" but lacks a subject for the second independent clause. It should be revised to "Working 9-5 daily and keeping up with homework is difficult."

Therefore, option A is the only sentence that is punctuated correctly.