Question

which of the following is not true of facial expressions?
some people naturally have more expressive faces than others.
we cannot consciously control and improve our facial expressions.
practicing in front of a mirror can help you become more aware of your facial expressions.
facial expressions often communicate emotions.
your audience may become confused if your facial expressions conflict with your speech content

Explanation:

Facial expressions can be consciously controlled and improved. People can practice in front of a mirror to be more aware of them. Some are more expressive naturally, they communicate emotions, and conflicting facial - speech cues can confuse an audience.

Answer:

We cannot consciously control and improve our facial expressions.