I believe the answer is B. Optimization because it means to make work more efficient but I might be wrong. Checking definitions, this one seems more logical.
D WiFi
It uses wifi to connect to the internet
the purpose and character of your use.
the nature of the copyrighted work.
the amount and substantiality of the portion taken, and.
the effect of the use upon the potential market
In its most general sense, a fair use is any copying of copyrighted material done for a limited and “transformative” purpose, such as to comment upon, criticize, or parody a copyrighted work. Such uses can be done without permission from the copyright owner
the nature of the copyrighted work; the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and. the effect of the use upon the potential market for or value of the copyrighted work
uwu hope dis halpz!