Question

close read: analyze the text
identify the choice that best answers the question.

the following question has two parts. answer part a first, and then part b.

part a
according to \learning rewires the brain,\ which of the following is true after we have learned something?
a. the flow of blood in the affected part of the brain is greater.
b. some nerve cells that transmit signals are merged into one cell.
c. nerve cells no longer need to \talk\ to each other to send signals.
d. the amount of energy used to transmit signals between nerve cells is reduced.

part b
which sentence from the text best supports the answer to part a?
a. that boost in blood flow highlights which cells are busy working.
b. areas that allow people to pay attention became most active as someone began a new task.
c. when the signal reaches the end of the axon, it triggers the release of those chemical messengers.
d. it takes less effort for them to signal the next cell about whats going on.

Explanation:

For Part A: Based on the concepts of how learning rewires the brain, when we learn a skill or information, the brain optimizes signal transmission between nerve cells, reducing the energy required for these signals.
For Part B: The sentence that directly supports the Part A answer is the one that states signal transmission requires less effort, which aligns with reduced energy use.

Answer:

Part A: D. The amount of energy used to transmit signals between nerve cells is reduced.
Part B: D. It takes less effort for them to signal the next cell about what's going on.