Answer:
e. a and b only
Explanation:
Speaking impromptu means to give a speech or a lecture in front of an audience without any formal previous practice or with preparing previously. It is giving on the spot speech to the audience with out any rehearsal.
While giving an impromptu, one should always make direct eye contact with the audiences so that the audience can see the confidence in your speech and should also provide few signposts t the audience so that the audience pay attention to and is alert of the speech. This helps the audience in keeping track of the ideas of the speaker.
Hence the correct option is (e).
