Question

When Charles gave his talk about child labor in India, he included a brief excerpt of a video presentation by a sociologist who had written five books about the subject. This is an example of___________________.

Answer 1

Expert opinion

Step-by-step explanation:

When Charles gave his talk about child labor in India, he included a brief excerpt of a video presentation by a sociologist who had written five books about the subject. This is an example of expert opinion.

Expert opinion is added when there is a need to validate the content through substantiated study. It supports ideas and gives more power and weight to what is being said.