The correct answer is interlock.
A. assemble easily
The correct answer is (C) To interlock (as with gear teeth); to become interlocked or cause to become interlocked; to be engaged (with others); to catch or entangle in, or as if in, a net; to enmesh. Also, to co-ordinate, combine, or match. To be harmonious.
Mesh comes from Old English mæscre (mesh).
Examples of use:
- The husband and wife were able to mesh their schedules successfully.
- The enthusiasm and skills of the two pianists meshed to produce a highly entertaining duet.