Correct Answer: off

Solution : The correct answer is option 1.

Explanation:

• - The offered sentence is about burning calories through exercising.
• - The term "burn" is used in the sentence to show that (a person) converts calories to energy.
• - As a result, 'off' is the most appropriate preposition to fill in the blank.
• - 'Off' indicates to be distanced or removed from something.
• As a result, option 1 is the proper response.
• Additional Information - Consider the following alternatives:
• - The word 'into' is employed to indicate a shift in status.
• - 'To' refers to approaching or attaining a specific situation.
• - 'From' is used to indicate a source.