Answer:
B. adjacent
Explanation:
"adjacent" means they are next to each other (like, touching, they share a side).
"complementary" means that together they make a right angle, or 90°.
"supplementary" means that together they make 180° (a straight angle-- a straight line)
"vertical angles" are made by crossing two lines (that makes four angles) the vertical angles are opposite from each other (touching only at one point) and they are equal.