My aunt (c) – just a new baby.
what will use in the gap?

The correct answer is the word Skimp instead "Skim"

Explanation:

In language, whether it is written or oral language error can emerge from the speaker or writer not following the grammar rules (grammar error), writing words incorrectly (spelling error), using punctuation marks incorrectly or avoiding using them when necessary (punctuation error), among others. In the case of "Here's why you should skip the skimp milk and go for whole milk instead" the type of error is a spelling one, which means words are not written correctly as the letters in words are not organized correctly or include letters that are supposed to be there. In this sentence the word Skimp refers to the word "Skim" that means to remove what is in the surface in the case of skim milk as fat is removed from it and not to the word Skimp that refers to avoid spending something, this means there is a spelling error as the writer added a "p" at the end of the word which is not correct and thus, the mistake is the word "Skimp" instead of skim.