Answer:
The correct answer is letter "C": Time preferences for consumption.
Explanation:
American economists Irving Fisher (1867-1947) proposed the Time Preferences for Consumption theory that contrasts saving money to spending it today. According to the theory, people will weight the return of spending or saving money based on their expectations. It means, how much the goods an individual can purchase today are worth versus the return of the savings in the future.
Thus, in the case, there is an evaluation of investing in Treasury Bonds versus investing today in a friend's business. The time preferences for consumption is applied when the individual compares the expected return of the Treasury bonds with what investing today could provide.