Read the paragraph given below and answer the question.
Insulin used for diabetes was earlier extracted from slaughtered cattle and pigs. Insulin from an animal source, though caused some patients to develop allergy or other type of reactions. Insulin consists of two short polypeptide chains: chain A and chain B, that are linked together by disulphide bridges. In mammals, including human, insulin is synthesised as a pro-hormone.

Patient with diabetes have:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Blood glucose more than normal level
In diabetes the body makes too little insulin or cannot use it, so glucose is not taken up by the cells and stays in the blood.
Option (1) Normal blood glucose level — Incorrect. In diabetes the body cannot make enough insulin or use it, so glucose stays in the blood. The blood glucose is high, not normal.
Option (2) Normal glucose and electrolyte level in blood — Incorrect. The blood glucose of a diabetic is above normal, so this option is wrong even though the electrolytes may be normal.
Option (3) Blood glucose level less than normal level — Incorrect. A blood glucose below normal is hypoglycaemia, the opposite condition. In diabetes, glucose is above the normal level.
Option (4) Blood glucose more than normal level — Correct. In diabetes, the body cannot make enough insulin or respond to it, so glucose is not taken up from the blood properly. The patient has blood glucose higher than the normal level.