Question

what is the function of the magnifying glass icon on the text - to - speech toolbar?
look up the meaning of a word
increase the size of all text on the page
increase the size of text as it is read aloud
find a word or phrase in the text

Explanation:

The magnifying - glass icon in software interfaces is commonly associated with search functionality. In the context of a text - to - speech toolbar, it is used to find a word or phrase within the text. It is not for looking up word meanings (usually a dictionary function), increasing text size on the page (a browser or document view function), or increasing text size as it is read aloud.

Answer:

find a word or phrase in the text