Correct Answer : A
Explanation :
Explanation :
Both are true; torsion allows head protection by mantle cavity repositioning.
Correct Answered :
Wrong Answered :
Reason (R): The repositioning of the mantle cavity allows the head to retract into the shell.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true, but R is false.
D
A is false, but R is true.
Both are true; torsion allows head protection by mantle cavity repositioning.
Correct Answered :
Wrong Answered :