Question

read it! the popularity of cellular phones has some experts worried. many people with phones prefer texting over a phone call or even a face - to - face conversation. the message may seem more important than the method, but some linguists warn that habitual texters might never learn essential conversational skills. many interactions, like interviews, still require in - person conversations. body language, tone of voice, and facial expression all play vital roles in direct communication. people who never learn to read these cues may feel uncomfortable. they might also miss important details. do it! texting may ______ some communication skills. a expose b dull c require d promote

Explanation:

The text states that habitual texters might never learn essential conversational skills, implying that texting could have a negative impact on communication - skill development. "Dull" means to make less sharp or less developed, which fits the context as texting may make some communication skills less developed.

Answer:

B. dull