Which line from the excerpt is an example of evidence in a persuasive speech? Your dedication and professionalism have moved and impressed us for decades. On this day 390 years ago, the great explorer Sir Francis Drake died aboard a ship off the coast of Panama. Well, today we can say of the Challenger crew: Their dedication was, like Drake's, complete. I've always had great faith in and respect for our space program, and what happened today does nothing to diminish it.

The line from the excerpt that is an example of evidence in a persuasive speech is On this day 390 years ago, the great explorer Sir Francis Drake died aboard a ship off the coast of Panama.

Explanation:

There are five types of evidence that a speaker can use to persuade their audience, this line uses a "case" evidence, this is when the speaker uses a similar situation that can be easily related to the current event to make the message more meaningful for the audience and to make it easier to get the acceptance of people.

Evidence in a persuasive piece of writing would be an indisputable fact. The detail in this excerpt that is inarguable is the date and location of Sir Francis Drake's death. The rest of the sentences could be contested as they are opinions.

Answer:

"On this day 390 years ago, the ... explorer Sir Francis Drake died aboard a ship off the coast of Panama."