A healthy individual has 12-16 grams of haemoglobin in every ______ ml of blood.

100

The correct answer is Option (1) -100

Red blood cells, also known as erythrocytes, derive their red color from hemoglobin, an iron-containing complex protein. This protein is responsible for transporting respiratory gases in the bloodstream. In a healthy individual, there are typically 12 to 16 grams of hemoglobin present in every 100 milliliters of blood.