During an investigation, a scientist observes that African wild dogs communicate with each other by sneezing. Which choice explains how the scientist most likely made this observation?

A. The scientist traveled to Africa and used an app on her mobile phone to measure the volume of the noises the wild dogs made while interacting.

B. The scientist traveled to Africa and used her sense of sight and her sense of hearing to observe the wild dogs interacting in their natural habitat.

C. The scientist watched hours of online videos in hopes of learning more about African wild dogs.

D. The scientist used books to look up the answers to her questions about African wild dogs and their interactions.