Okay last question i ill pick brainliest + extra points

The second one, because assuming angle ACD and angle ACB are both right angles, all you would need is the confirmation of 2 lines that are equal. I hope this helped!

Here, one side with is altitude of both of the triangle is same so it is equal plus one angle is also equal as mentioned by same marking. In order to prove AAS congruency we need one more congruent angle & only one angle in both triangle still remains, which is CBA & CDA.

In short, Your Answer would be Option D

Hope this helps!