Oscillation is motion periodic repetitive motion between two points
Oscillation is the process of moving in back and forth motion regularly Oscillation is defined as the process of repeating variations of any quantity or measure about its equilibrium value in time. Oscillation can also be defined as a periodic variation of a matter between two values or about its central value.
When an object moves frequently back as well as forth, it is said to be oscillating. In contrast, periodic motion describes a movement in which an object repeats a course after a set amount of time. While all periodic motions appear periodic, not even all oscillatory motions are.
Hence, the correct answer will be option (c)
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