Which of the following units is a fundamental unit?

Which of the following units is a fundamental unit?

مندرجہ ذیل میں سے کون سی اکائی بنیادی اکائی ہے؟
Explanation
  • The Second is a fundamental unit of time in the International System of Units (SI).
  • It is one of the seven base units that are used to derive all other units.