During her speech on how to brush a dog's teeth, Rosa shared her by explaining her experiences as a veterinary technician that qualifies her to speak with authority on the subject.

a. statistics

b. primary research

c. knowledge

d. credentials

option d credentials

Explanation:

Rosa using of her credentials to drive a point so that the people can understand her better and also sell herself. Credentials are usually the capabilities or abilities and all the experience a person has over the years in a given area of job or field. It is also a written document that tells more about a person, their interest, experience.

answer; approx,300,000 ;

answer; /// the above statement is (true);