Is it true that exposed film is less sensitive compared to unexposed film?

The assertion that exposed film is less sensitive compared to unexposed film is indeed false. Exposed film has already undergone a chemical reaction where the silver halide crystals in the emulsion have been altered by exposure to light. This makes the exposed film less reactive to light during the subsequent development process, as the latent image has formed and is now awaiting development.

On the other hand, unexposed film has not yet reacted to light and remains fully sensitive to exposure. It retains its ability to react to light when exposed, making it more sensitive in that regard. Therefore, the statement is incorrect, confirming that the chosen answer is indeed the accurate response to the question posed.