By definition, opportunity cost is the cost of the next alternative that you gave up because you choose another one. In this case, there are two alternatives: the big burger, and the chicken sandwich. Because Tanya chose chicken sandwich, then her opportunity cost is the cost of the big burger.
...................................................................hhbhjvhg
They had improved ship designs, navigation accuracy and cannons as well as joint stock companies
Answer:
Convenience sample
Explanation:
A convenience sample is a sample where subjects are selected because of their proximity to the researcher. The person gathering the information has easy access to this sample and that's why it's chosen.
In the problem, Martina asks her parents, grandfather, brother, uncles and sorority sisters, in other words, she chooses the people who are closer to her and that will be easy to have access to for the interviews. That is why this is an example of convenience sample.