Answer:
Similarities: They are both scientists, they are both wearing lab coats, they are both in a laboratory. Differences: One's a boy, one's a girl, the boy scientist has equipment in front of him, The girl has a door behind her.
Explanation:
Wasn't it Phillis Wheatley's "Poems on Various Subjects, Religious, and Moral"?
A the words say that all people should be free and have others treat them fairly
The conductor urged "All musicians should continue to practice for the remainder of the week."
This one looks the best to me. The only thing is there should be a comma next to, "urged"
The 3rd one. I hope this helps :)