________ The adult learner learns more rapidly when he or she is made aware of progress

Of the three types of blood vessels, blood flows most slowly through the ____________________, allowing more time for the diffusion of oxygen, nutrients, and waste products

Fill in the blank(s) with correct word

For skills that involve a starting signal and require movement as quickly as possible after this signal (e.g., swimming, sprint), the amount of time between the warning and start signal should be:

A. As constant as possible for every start B. The same for every start C. Varied for every start D. As short as possible for every start