Answer:
The word present would mean: <em>The act of delivering something</em>.
Explanation:
We can use this definition in the text, as well as context clues to find out that this is the correct answer.
"Sam had to deliver a lecture to the rest of the class, but he was nervous."
They are sources that you can find the date, author, and have real facts and not just made up. Like if you went to the IRS website then that is a credible source for tax where as going to Wiki they are not credible because anybody can go there
I'm not sure what the lesson is, but the answer that makes sense the most is number. Number because most lessons in subject-verb agreement concerns the singularity and plurality of the subject at hand
