It would be reasonable to suggest that the Flynn effect is due in part to .

a. the decreasing reliance on a single test score as an index of mental aptitudes.
b. increasingly improved childhood health and nutrition.
c. the lack of early childhood education in urban areas.
d. the failure to restandardize existing intelligence tests.
e. the deteriorating quality of parental involvement in children's education.

b. increasingly improved childhood health and nutrition

Explanation:

It would be reasonable to suggest that the Flynn effect is due in part to increasingly improved childhood health and nutrition.

Flynn effect is refer to the observed rise over time in standardized intelligence test scores i.e a secular increase in population intelligence quotient (IQ) observed over time, this observation was documentation by James Flynn in 1984, increase in IQ scores can be due to improvements in education and better nutrition.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.