Choose the option that best conveys the meaning of the underlined portion in the following sentence;
In the match against the uplanders team, the sub mariners turned out to be the dark horse
The correct answer is: C
Explanation
The term "dark horse" is an idiomatic expression that refers to a little-known or less-favoured contender in a competition who unexpectedly achieves success. In the context of the sentence, describing the sub mariners as "the dark horse" suggests that they were not widely expected to win, but they surprised everyone by emerging victorious in the match against the uplanders team.
Therefore, option C, "won unexpectedly," accurately conveys the meaning of the underlined portion in the sentence.