One way to save money on electricity is to replace incandescent bulbs with compact fluorescent (cf) light bulbs a. outside visible spectrum b. creating light by radiating heat c. emitting light by creating water vapor d. producing light by adding neurons to a glowing material

D

Explanation:

CFL ( Compact Fluorescent Light) bulbs have replaced incandescent bulbs because they more energy efficient due to which a lot of money can be saved on electricity bulb.

CFL contain mercury. The electrons bound to mercury radiate UV light when when they return from excited state to lower energy state. The UV light gets converted to visible light when it strikes the fluorescent coating.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do

i think that d. wind is the answer.   i missed the question when i answered a. currents.