GENERAL KNOWLEDGE

Detailed explanation-1: -A fundamental quantity should be such that it does not depend on other fundamental quantities. Speed is defined as the ratio of distance to time. Hence, length, time and velocity cannot be listed under fundamental quantities in any system of units.

Detailed explanation-2: -Speed is a fundamental physical quantity.

Detailed explanation-3: -In Physics, Length, Mass, Time, Electric Current, Thermodynamic Temperature, etc are examples of Fundamental Quantities.

Detailed explanation-4: -Hence, (c) is the correct option i.e the weight is not the fundamental quantity.

Detailed explanation-5: -Speed is a derived quantity which is dependent on two fundamental quantities namely length and time. Speed gives us information on how fast an object moves.