Final answer:
The characteristics that indicate an IV insertion site may be inflamed are warmth, firmness, and discomfort. These are aligned with the cardinal signs of inflammation which also include erythema and edema. The correct options are 1, 3, and 5.
Step-by-step explanation:
Characteristics associated with touching an intravenous insertion site that support the conclusion that the insertion site may be inflamed include warmth, firmness, and discomfort.
These symptoms are part of the five cardinal signs of inflammation, which are erythema (redness), edema (swelling), heat (warmth), pain (discomfort), and altered function. Firmness at the site may also be reflective of swelling, which is another indication of inflammation.