69. Which of the following sentences is grammatically correct?

Answer: D

Explanation:

Tammy and Yukio wanted to see the art exhibition, but the museum was closed when they arrived.

This sentence is grammatically correct as it effectively uses a conjunction to join two independent clauses, maintaining clarity and coherence throughout.

A) Indian food is delicious overall, I like Thai food even better.

This option is incorrect because it incorrectly joins two independent clauses with a comma, leading to a comma splice. A semicolon or a conjunction is needed to connect the two complete thoughts properly.

B) Carlos went to the library where he checks out a book about butterfly species.

This sentence is incorrect due to the verb tense inconsistency. It should use the past tense "checked out" to match the past action of going to the library, thereby maintaining tense agreement within the sentence.

C) I am glad you are going to the store we need milk and eggs.

This option is incorrect because it lacks appropriate punctuation between two independent clauses. A semicolon, period, or the addition of a conjunction would be required to separate these two complete thoughts.

D) Tammy and Yukio wanted to see the art exhibition, but the museum was closed when they arrived.

This sentence is correct as it properly employs a coordinating conjunction "but" to connect two independent clauses, ensuring grammatical accuracy and clarity.

Conclusion

The correct answer, option D, exemplifies proper grammatical structure by correctly linking two independent clauses with a conjunction. In contrast, the other options either suffer from punctuation errors or tense inconsistencies, rendering them grammatically incorrect. This highlights the importance of correct sentence structure in written communication.