It looks as if A, B, and D are all correct, but as far as formal recognition, I think B is right.
I don't get it
Hey, its C.
Yes, B: The president receives foreign diplomats is the correct answer as an example of the president's power of recognition. The president's power of recognition refers to the authority to acknowledge or accept other countries and their governments as legitimate entities. When the president receives foreign diplomats, it is an indication that the president recognizes the sovereignty and legitimacy of those foreign governments.