The answer is your own wight
cognitive neuroscience is <span>the study of the physical changes in the brain and nervous system during thinking.</span>
The best answer for your question is D
"They are less likely to have money for extra-curricular activities."
Why? Because often times when one or more children live with only one stable source of income money runs a bit tight. So extra actives for the children will be out of the budget assuming the parent isn't in a high paying profession (doctor, lawyer etc)