Which of the following is closest to $5 \mathrm{~cm}$ ?

(A) The length of a full size school bus

(B) The height of a picnic table

(C) The height of an elephant

(D) The length of your foot

(E) The length of your thumb
Of the possible answers, the length of your thumb is closest to $5 \mathrm{~cm}$.

ANswer: (E)