Answer :
Bilateral symmetry means right and left side of the body is symmetrical. It is the widespread symmetry found on organisms lime vertebrates, arthropod, worms etc.
Answer : The correct answer is - C) The left and right sides of the body are symmetrical.
Explanation -
Bilateral symmetry is a body plan of a life form, according to which the organism can be divided into two equal halves (right and left half) only when cut through central axis/midline of the body (also called saggital plane).
Example of bilaterally symmetrical organisms- insects like coackroach, butterfly.
Thus, option C) is the right answer.