Context: Read the description of a trait.
Sam knows how to do tricks with a jump rope.
What information supports the conclusion that Sam acquired this trait?
A. Sam won a competition at his school with his jump rope tricks.
B. Sam's sister taught him how to do tricks with a jump rope.
C. Sam has three jump ropes, each made of a different material.
Pick the correct answer from the listed options and provide the letter of the selected option.

B