Medium which sends signal from source to destination is known as ___ ?

✅ C. Zinc

✅ A. smallest particle of an element which can undergo a chemical reaction

✅ A. 76 years

✅ B. Kidney

✅ B. Mercury

✅ C. Green

✅ B. 1.2 to 1.4 Kg

✅ A. ozone depletion