The chart compares the price of graphic t-shirts to the quantity demanded. this chart shows the link between
a. interest in a product and the price a consumer pays.
b. interest in a product and the price a producer pays.
c. amount of a product and the price a consumer pays.
d. amount of a product and the price a producer pays.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

the first question's answer is a.

dude the first thing it says is that copied answers will get a zero. plus it would take anyone on an incredibly long time to answer. ive seen 2 people asking the exact same question and their questions got taken down. i have the assignment too, and im in the progress of doing it. i suggest going to a more private website, because this is the first place teachers look.

answer; continous;