The relative highness or lowness of a speaker's tone is the vocal attribute of _________

As you struggle to understand your calculus homework, your best friend who happens tobe a math major offers to help you. This is an example of:

A. interpersonal validation B. authentic dialogue C. competent dialogue D. confirming messages

Dr Nelson frequently uses words like contusions, hemorrhagic stroke, and sequelae. This is an example of how __________ influences verbal communication

a. education and occupation b. ethnicity and race c. age d. regionality