How is a commemorative speech similar to and different from an informative speech?

What is extemporaneous speaking? When should it be used, and what are three suggestions

for using it well? What will be an ideal response?

A speaker says "The elderly gentlemen in the black suit and red tie entered the neighborhood grocery," instead of "The man went to the store." This exemplifies that the speaker is _____

A) ?using denotation B) ?speaking quickly C) ?using specific language D) ?speaking vaguely