Question Which is the best version of the underlined portion of sentence 7 (reproduced below)?
Not only that, but after just nine generations, the fox's ears became floppier, their coats became spotted,
and their tails became curlier-characteristics that are common across domesticated species.
O as it is now)
O fox's ear's
foxes' ears
O foxes ears'

we have to select the terms that are associated with communication between neurons.

synapse is the gap between two neurons that is there to transmit the signal.

from one neuron to other neuron the signals transmit through neurotransmitter which is a chemical and finally after reaching it becomes the electrical signal

therefore, option 4th is correct that is: synapse,electrical signals and neurotransmitter.

the histogram that represents the data with the largest spread is data set b