Help please. how do i do this?

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21