What does the medical acronym b/k mean?

What ingredients used in tobacco products been banned?

Which u. s. state is home to the fewest species of mosquitoes?

Effective communication consists of a. verbal and nonverbal communication and speaking clearly and loudly b. verbal communication and stereotyping c. verbal and nonverbal communication and active listening skills d. nonverbal communication and minimal interruptions   select the best answer from the choices provided.