What issue arises regarding the Christmas presents sentence?

The issue regarding the Christmas presents sentence stems from the improper capitalization of the word "niece" if it is used in a general context rather than as a proper noun. In English, common nouns like "niece" should only be capitalized when they are part of a proper name or at the beginning of a sentence. If the sentence refers to nieces in general terms, then "niece" should remain lowercase. This addresses the conventions of capitalization in English grammar.

When addressing the other options, it's important to note that if there is indeed no error at all, that would imply all capitalization and punctuation are correctly applied. However, the specific problem highlighted focuses on capitalization. Issues related to misuse of a colon or incorrect punctuation with "some" would pertain to different grammatical rules that are not the primary concern in this scenario, reinforcing that the focus here is on proper naming conventions.