Answer:
D. I see three new students on the roster: Brown, Brian; Jones, Janis; and Monroe, Max.
Explanation:
In this situation, due to commas using two functions may lead to confusion, a semicolon is used as a more powerful comma.
A does not use this, so <em>it could be misread easily</em>.
B puts the semicolon where only a comma could suffice, so <em>it separates the entity "Brown, Brian" and turns it into "Brown" "Brian, Jones"</em>.
C works correctly <em>until the oxford comma, which throws up the entity grouping</em>.
D is the only one that perfectly groups the three entities.
Answer:
A. As you know, it is getting close to summer and school will be ending shortly.
Explanation:
The exact noun for children is child.
"perfect chances of verbs?" I haven't heard of that, ever, in my 73 years.
Is it possible that you meant "perfect tenses of verbs?"
One possible answer for consideration would be "auxiliary verb," such as "had," "have," and so on.