An archaeologist discovers new evidence suggesting humans inhabited a particular area long before it was originally believed. Because these results are so novel, if the archaeologist is critically thinking, she should first:

Shari is trying to decide how she should use her cash birthday gifts. her choices are new clothes, a concert ticket, or donating the money to her favorite charity. shari decides to donate the money. the value given up by not choosing both the clothes and the concert ticket is called a . a.) trade-off b.) opportunity cost c.) retail price