In response to a stimulus a brain cell called a neuron will send a signal to the brain using
a). electrical signals and chemical neurotransmitters
b). myosin and actin
c). contraction and relaxation
d). respiration and absorption

The answer I believe is A

d i think its   answer d

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