To say that public speaking is a way to make a difference about something we care about is to recognize that public speaking is

Form of empowerment

Art more than a science

all of these answers are correct

It's a skill similar to conversation and an art more than a science

Skills similar to conversation

The correct answer is option 1. Form of empowerment

Explanation:

Public speaking "is a verbal means of passing a piece of information to a large number of people in gatherings, events, schools, etc. Public speaking involves impacting listeners with knowledge, depending on the subject of the speech.

For instance, a speaker can be invited to a school to talk on " Various Ways a Student can be the best at learning". As the speaker goes on to speak, students take notes and subsequently apply them at school.

Given the above, public speaking is a "form of empowerment".