Which of the following is not among the risk factors for coronary heart disease that can be minimized by behavioral change?
a) inactivity b) smoking c) heredity d) hypertension

C. Heredity

Explanation:

From the risk factors for Coronary Heart Disease listed. The only which is not modifiable is hereditary risk factors, since you are born with them. Inactivity can be modified by regularly exercising. Smoking can be suspended or avoided completely. Hypertension can be controlled with medication and behavioral changes.

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.