Which of the following symbolizes the treatment phase in a single-subject design?

a) a
b) b
c) s
d) t

The correct answer is letter B.

Explanation: Single-subject  is a research project most often used in applied fields.

the correct answer is ) possibility.

demonstrating opportunity cost is done through production possibility.

the opportunity cost can be demonstrated using the production possibility frontier or curve. this graphic shows the total number of possibilities for two products when we have the resources needed and used in an efficient manner. the main resources could be money, labor, and technology. the curve shows that the production of one good increases when the production of the othe

i am confused, what is the question? i can you out if you put it into more depth.