I would say this is a complex sentence. Because it has one independent clause(their more aggressive style did not pay of.) and two dependent clauses.
I'm pretty sure that the answer is D. Usually
Answer:
“Warmest wishes and love on your birthday and always!” “Be safe, have fun!" “So grateful for you.” “Wishing you a happy birthday!!"
if thats what you mean-
I would say b. what did you think of my essay?
