Answer:
Common-ground persuasion technique
Step-by-step explanation:
A common-ground persuasion technique is a technique aimed at improving interpersonal relationships. Like the word, common ground means establishing agreement on certain ideas or points in other to ensure that relationships between individuals are stable and problem free.
In the case of Rebecca, she has used the common-ground persuasion technique to ensure that her boss accepts her suggestion that one of the office assistants take on the responsibility of completing the sales report. By carefully outlining more disadvantages of her taking up the responsibility, her boss will most likely agree to her suggestion.
Cheers.