Streptokinase produced by bacterium Streptococcus is used for

The correct option is Removing clots from blood vessels.

Detailed Explanation:
Streptokinase is a bioactive molecule produced by the bacterium Streptococcus. It is clinically utilized as a "clot buster" enzyme.
In the human body, streptokinase works by converting plasminogen into plasmin. Plasmin is an enzyme that degrades fibrin, which is the protein meshwork holding blood clots together. Consequently, streptokinase is administered to dissolve clots formed in the blood vessels of patients, particularly those suffering from myocardial infarction (heart attack), in order to restore normal blood flow and prevent further tissue damage.