Caleb went into a cave.
The light intensity (in candela per square meter, or \text{cd/sq. m}cd/sq. mstart text, c, d, slash, s, q, point, space, m, end text) as a function of depth inside the cave (in \text{m}mstart text, m, end text) is graphed.
What is the approximate average rate at which the light intensity decreases, as Caleb goes from a depth of 5\text{ m}5 m5, start text, space, m, end text to a depth of 14\text{ m}14 m14, start text, space, m, end text?
graph
Choose 1
Choose 1

(Choice A)
A
330\text{ cd/sq. m}330 cd/sq. m330, start text, space, c, d, slash, s, q, point, space, m, end text per \text{m}mstart text, m, end text

(Choice B)
B
360\text{ cd/sq. m}360 cd/sq. m360, start text, space, c, d, slash, s, q, point, space, m, end text per \text{m}mstart text, m, end text

(Choice C)
C
390\text{ cd/sq. m}390 cd/sq. m390, start text, space, c, d, slash, s, q, point, space, m, end text per \text{m}mstart text, m, end text

(Choice D)
D