Can someone help me with this I tried everything

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Pranza plotted point a in the coordinate plane below.