What is the mechanism by which tetracyclines exert their antibacterial effect?

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Blocking the attachment of aminoacyl tRNA to the ribosomePreventing the activity of peptidyl transferase enzymeDisabling elongation factor functionsInducing errors during mRNA translation

Explanation

Tetracyclines work by preventing aminoacyl tRNA from binding to the ribosomal complex, thereby inhibiting protein synthesis. Other options describe mechanisms of different antibiotic classes.