For a Speaker to Be Consistently Efficient at Verbally Conveying

For a speaker to be consistently efficient at verbally conveying their intended meanings, they must _________.

A) understand that intended meanings may not be fully conveyed by a message because of a variety of factors
B) use shared language that has a universal meaning
C) reiterate their message more than once to the recipient
D) constantly define what their words mean during an communication interaction.