Final answer:
The most appropriate statement for the LVN to make is to suggest trying a different nursing position to address nipple irritation.
Step-by-step explanation:
The most appropriate statement for the LVN to make is b) Try using a different nursing position.
Nipple irritation is a common concern among breastfeeding mothers, and it can be caused by various factors such as improper latch, friction, or sensitivity. Recommending a different nursing position can help alleviate nipple irritation by ensuring a better latch and reducing friction on the nipples.