What is the term for a molecule that attaches to an enzyme's active site without producing any product?

Explanation

Option A refers to inhibitors that bind permanently and deactivate the enzyme irreversibly. Option B describes inhibitors that bind and release reversibly. Option C is correct because a competitive inhibitor attaches directly to the enzyme's active site, preventing substrate binding without forming products. Option D involves inhibitors that bind at different sites, altering enzyme activity without competing at the active site.