Final answer:
Carla is an opinion leader among her friends when it comes to baby products.
Step-by-step explanation:
In this scenario, Carla is a opinion leader among her friends when it comes to baby products. An opinion leader is someone who holds influence over others' attitudes, beliefs, and behaviors by sharing their expertise or recommendations in a certain area. Carla's friends turn to her because she always knows about the best new items and where to get them, making her a trusted source of advice in this specific domain.