Answer:
I think it would be B. it makes it sound more like a paragraph. It's more understandable
Answer: The three proper nouns are: Martin Luther King Jr, Monday, January
Answer:
Its either the first option (on the left)
or the bottom option on the left
(other words its either "A study found that playing certain games gave students more confidence" or "video games have benefits in the classroom besides grabbing students interest"