Start by selecting other text that is away from the link ( like a word or a few letterw before the link, then a few letters or a word after the link.
Then use the highlight/selection handles at either end of the highlighted area and slowly slide them in until you reach the beginnng and end of the link, like this
Test word ( Start of LINK ) What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support ( End of LINK ) test word
The actual link isn't colored blue, in the middle of my sentence, like it should be when a link is posted here, not sure why this is happening, so I delineated it by putting in ( Start of Link ) ( End of Link ).
See the images below.

