Q.
The characteristic of the shape function is _____.
Answer & Explanation
The shape function has two key characteristics: (a) it has a value of 1 at the node it corresponds to, and (b) it has a value of 0 at all other nodes. Additionally, the sum of the shape functions for any element is always equal to 1, ensuring proper interpolation of displacements within the element.
Thus correct option is: C.