Question: Mrs. Henderson's class has five small covered boxes. One contains perfume; another contains dried onions. There is also a box of pine needles, a box of lemon pieces, and a box with a paper towel wetted with vanilla flavoring. Which should they do to get the best information about what is in each box?

  Options: 
 A. Shake the boxes.
 B. Smell the boxes.
 C. Listen to the boxes.
 D. Weigh the boxes.
Answer: B