Direction: Choose the correct meaning of the underlined phrase/idiom from the…

An idiom is a fixed multi-word expression whose overall meaning is figurative and cannot be derived by combining the literal meanings of its individual words; it must be learned as a set phrase with an established, dictionary-recorded sense.

"Go the extra mile" is one such idiom, built on the image of covering more distance than the minimum required. Standard dictionaries (Cambridge, Merriam-Webster) record its meaning as putting in more effort than is expected or necessary to achieve a goal. In the given sentence, the athlete's determination before the championship is described using this idiom, so the underlined phrase conveys putting in extra effort beyond what is normally required, that is, to make additional effort.

• "Travel abroad" takes 'mile' as a literal unit of geographic distance, describing physical movement to a foreign country rather than a figurative degree of effort.

• "Avoid hard work" describes an attitude of minimizing exertion, the opposite disposition from covering extra distance or effort.

• "Challenge the coach" describes a specific interpersonal confrontation directed at an authority figure, unrelated to the idiom's sense of extra exertion.

Only "make additional effort" matches the dictionary-recorded figurative sense of the idiom, so it is the correct meaning of the underlined phrase.