Which age is the benchmark for maximal efficiency of physiological functions?

Read the quote from hezekiah niles on page 150, based on this quote, what is a defining characteristic of the era of good feelings?

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

Me with my drivers and you! ** will mark you brainliest and give you 15 free points if answered correctly ** when you're upset, you're up to times as likely to get into a crash. a. 2 b. 4 c. 8 d. 10