Which of the following options is a commercially available agent used for lowering blood cholesterol levels?

Statin

The correct answer is Option (1) -Statin

Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol.

Streptokinase, produced by the bacterium Streptococcus and genetically modified, serves as a "clot buster" in the removal of blood clots from the vessels of individuals who have experienced a heart attack.

Lipases are enzymes that break down fats and oils. They are effective in removing oily stains from laundry. Lipases are often added to laundry detergents as an ingredient to enhance the cleaning power for oil-based stains.

Cyclosporin A is a bioactive molecule that is widely used as an immunosuppressive agent in organ transplant patients. It plays a crucial role in preventing organ rejection by suppressing the immune system's response to the transplanted organ. This important medication is derived from the fungus Trichoderma polysporum.