You need to measure the brightness of a light bulb using the metric system. in which unit do you express your measurement?

a. meter
b. liter
c. kilogram
d. candela

When we find the measurement of a light bulb's brightness, we're actually looking for its luminous intensity. Recall that the SI unit (standard unit) used to represent an object's luminous intensity would be candela. Hence, the answer would be D. candela.

13 and 3 are alternate interior and 15 and 1 are alternate exterior.