Identify the constant of proportionality from the graph.

A. 1/2
B. 8
C. 2
D. 5​

Phreatophytes, like the mesquite tree, have adapted to desert conditions by developing extremely long root systems to draw water from deep underground near the water table.

Step-by-step explanation:

The mesquite's roots are considered the longest of any desert plant and have been recorded as long as 80 feet.