Final answer:
The correct answer is C. 'World Leader' should be 'world leader'.
Step-by-step explanation:
The correct answer is C. 'World Leader'. In the sentence, 'World Leader' should not be capitalized because it is not a proper noun. Proper nouns are capitalized, while common nouns are not. 'World Leader' is a common noun phrase that does not refer to a specific person or title. Therefore, it should be lowercase.
Learn more about Capitalization in English