Patulong please serious answers only

3.D
4.B
Solution:
3.Because the lines e and f are parallel
so <3 and <5 are corresponding angles
<2 and <8 are corresponding angles
so choice D.
4.<3 and <8 are not form a linear pair because their are not in a straight line, so choice B.
Step-by-step explanation:
Hope it helps..
Goodluck..