Answer:Ambush definition is - to attack by surprise from a hidden place : waylay. ... in ambush (see ambush entry 2 sense 2) Mr and Mrs Fyne ambushed at their ... It's an ambush, with gunmen on both sides of the road. ... at night when the infantry can more easily wait in ambush or approach unseen. ... On the History of 'cc' and 'bcc'.
Explanation:
D - considering the audience
4) Time-consuming lab work
3) Exhaustive note taking
It's asking you proof that Ramirez is a demanding teacher not about the course itself so it is not 1, 2, 4 or 6. It is 4 and 3 because it shows Ramirez was demanding by enforcing a heavy load of work