Arnold gesell a. foreshadowed lifespan research by writing a book on aging b. constructed the first successful intelligence test c. is generally regarded as the founder of the child study movement d. was among the first to make knowledge about child development meaningful to parents

The correct answer is letter D. It is because Arnold Gesell is the first person who was able to share and make knowledge regarding child development in which was considered to be meaningful to the parents as this allows the parents to be informed of what they are to expect in each of the respective age of the child.

answer; (true);

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer