If you could help it would mean alot.

Nothing is ever erased in an engineering notebook because
A) Only pen is used
B) They can be used to criticize the engineer
C) It is unlikely that an engineer will make a mistake
D) Mistakes are part of the process and need to be noted

D is the correct choice.

Explanation:

I'm assuming that this is probably a phase in the textbook or progarm you are studying, and this is just a matter of reading thoroughly.

Engineers usually benefit from catching a mistake, and would also benfit from keeping record of a misstep in order to remain clear of that mistake in the future.

Have a great day, and mark me brainliest if I am most helpful!

:)