Hello!
First, let's analyze these two quadrilaterals:
• Notice that the quadrilateral AB'C'D is ,smaller ,than the quadrilateral ABCD.
Let's try to solve it using the lines AB and AB':
• The measurement of the ,line AB is 14 units,.
,
• The measurement of the ,line AB' is 7 units,.
Knowing it, let's write the scale factor as:
Answer: alternative D.