In quadrilateral ABCD seeing line A.B. is parallel to line cd which iadditional piece of information is needed to determine the ABDC is a parallelogram

A.

Step-by-step explanation:

In a parallelogram, if one pair of opposite sides is both parallel and congruent, then the quadrilateral is a parallelogram.

Here you already know that sides AB and CD are parallel.

If sides AB and CD are also congruent, then quadrilateral ABCD is a parallelogram.

A.

B 2

Step-by-step explanation:

If you look at the graph, you can see it goes up every hour by 2.

So therefore your answer will be 2.

Hope this helps!