Which of the following is a run-on sentence? a. it was such a beautiful day, so we decided to eat lunch outside. b. my favorite things to do on rainy days are to eat popcorn and watch movies. c. i was surprised by how loud my new baby sister could cry i might have to get ear plugs. d. the principal was concerned about the situation; he called a special meeting with the teachers.

C. I was surprised by how loud my new baby sister could cry I might have to get ear plugs.

Explanation: A run-on sentence is a sentence that conjoins thought with the usage of conjunctions and punctuation such as a comma or semi-colon. Choice C did not use any punctuation, besides a period (which doesn't matter in this case) and did not contain any conjunctions whatsoever. 

Choice A is incorrect because the word "so" was used to bridge two thoughts. "So" is a conjunction. Also, a comma was used, so we know this isn't a run-on sentence. 

Choice B is incorrect because the word "and" was used merge two thoughts. "And" is a conjunction.

Choice D is incorrect because a semi-colon was used to couple two thoughts into one sentence. 

Thus, the answer is Choice C.

battle of midway

during world war ii, it was the "battle of midway" that was the first significant us victory in the pacific, since the us was able to inflict heavy losses on the japanese fleet.

the correct answer is

1. lived in castle in naples

2.educated in monastery

3.received a doctorine in theology

4.taught in paris

5. studied in dominican monastery