What event greatly shakes Tom, making him much less carefree and happy and much more worried and sad after it happens?



 
A.
the murder that he and Huck Finn witness in the graveyard


 
B.
the experience he has as a pirate with Huck Finn and Joe Harper


 
C.
the argument that he has with Becky Thatcher over Amy Lawrence


 
D.
the punishment he receives for talking to Huck Finn on the way to school