Cyclosporin-A is a widely used immunosuppressive drug. It is primarily given to prevent organ rejection after transplants (kidney, heart, liver, etc.). It works by inhibiting T-cell activation, which is crucial in the body's immune response, especially during transplant procedures.
Cyclosporin-A: An immunosuppressive agent that suppresses the immune system to prevent rejection in organ transplants.
Statins: These are cholesterol-lowering drugs and are not used for immunosuppression.
Drugs: This option is too vague to be a correct answer, as it does not specify any particular immunosuppressive agent.
Streptokinase: A thrombolytic agent used to break down blood clots and is unrelated to immunosuppression.
Thus, the correct answer is (a) Cyclosporin-A.