Anode is a point on a standing wave that has no displacement from the rest position. at the nodes, a) the wave is refracted b) there is complete destructive interference between the incoming and reflected waves c) the wave is diffracted d) there is complete constructive interference between the incoming and reflected waves

(B) There is complete destructive interference between the incoming and reflected waves

Explanation:

For example, if you pluck a guitar the waves will travel back and forth. They consist of nodes and anti-nodes. It is created, when the wave traveling to one side and bounces of the other end and comes back. As it travels to the other side, it is reflected thus, comes back. So standing waves occurs when there is interference.

When the wave is produced, the points where the string is not moving are called nodes and where they are moving are called anti-nodes. The positions where nodes are produced, destructive interference occurs and where anti-nodes are produced, constructive interference occurs