Answer:
the.
Step-by-step explanation:
There are three (3) main articles used in English language and these are;
1. An: it is a word that is mainly used before words beginning with any of the vowel letters (a, e, i, o and u). It's an indefinite article used for modifying non-specific (unspecific) nouns.
2. A: it is mainly used with consonant sounds or letters. It's an indefinite article used for modifying non-specific (unspecific) nouns.
3. The: it is a definite article used before nouns or superlative adjectives to indicate uniqueness.
In this scenario, the most appropriate or suitable article to use in completing the sentence is "the" because it appears before a proper noun (Maldives).
Therefore, the sentence is written as;
"I'm not sure I understand why you're scared to visit the Maldives."