The correct option is A Less urea in his urine
Urea is a waste product formed in the liver after the breakdown of proteins, fats and carbohydrate. In the kidneys, urea is filtered out of the blood and excreted in the form of urine.
During a long hunger strike, the metabolic rate is reduced. As a result, less urea is formed as the by product, which in turn decreases the amount of urea in the urine.