A light bulb requires electrical energy to produce light.
Black numbers on a white background are easier to see in darkness or bright light.
Bulbs require electrical energy to see in darkness.
Bulbs produce electrical energy to what?
Options:
a. reproduce
b. Change colors
c. rain or sun shine
d. adding heat
e. look at the sun
f. power up cars
g. see in darkness
h. walk through yards