Final answer:
Montgomery straps are used to secure a dressing, providing a means to easily change the dressing without repeatedly removing adhesive tape, thereby preventing skin irritation.
Step-by-step explanation:
Montgomery straps are used for c) to secure a dressing. These straps are an alternative to traditional adhesive tape and are often used in medical settings to hold dressings in place without the need for repetitive removal and application of tape, which can damage the skin. Montgomery straps typically consist of two adhesive tabs that have holes through which a lace or band can be tied. This allows the dressing to be removed or changed easily while leaving the straps in place, leading to less irritation of the patient's skin around the wound.