Which field mapping option allows you to disable stemming in a search?

The option that allows you to disable stemming in a search is based on the understanding of how text processing occurs within a search framework. Stemming is the process of reducing words to their word root, which can sometimes lead to mismatches in search results when users expect exact matches.

Choosing to use the "Exact text" mapping means that the search will treat the input text as a literal string, which prevents any stemming from being applied. This is particularly useful when users require specific term matches without alteration, ensuring that only the exact term will trigger results.

In contrast, other options like "Import text only," "Field mapping," and "Standard mapping" do not guarantee the same level of specificity regarding stemming. These options typically allow for more flexible text handling, meaning they might apply transformations like stemming or variations, which can change the way search queries are processed. Thus, "Exact text" is the most effective choice for disabling stemming, as it enforces strict adherence to the search term used.