Answer:
B. Love can make people act crazy.
Step-by-step explanation:
The theme of madness is present all throughout the play, in fact, Lysander and Hermia are very irrational at the beginning when they decide to escape. Moreover, after Puck casts a love charm on the wrong person, the way the characters try to show their love for each other is rather crazy.
Furthermore, throughout the play we can find scenes of jealousy which makes characters act crazy, for example, when they almost try to kill each other.
The name of this play "A midsummer night's dream" suggests the dreamlike atmosphere that this play presents; dreams have the tendency of lacking logic, and most of the times they are even crazy. As a result, the name also backs up the idea that "love can make people act crazy".