Knowledge of type words
We need to fill in an adjective that adds meaning to the noun “country” → choose the answer C
Information: Singapore is highly ranked for its economic competition, and it was the world’s most competitive country from 1997 to 1999 as ranked by the World Economic Forum.
=> Singapore is ranked highly in terms of economic competitiveness, and it was the most competitive country in the world from 1997 to 1999 ranked by the World Economic Forum.
→ Answers C