A living, breathing audience makes speechmaking one of the most personal, exciting, and empowering forms of communication
• Speakers who fail to connect with their audiences will also fail to achieve their purpose; your purpose should not be fixed or inflexible; the more your learn about your audience, the more likely you will modify your purpose in small ways or even change it radically
The use of the comma here is incorrect because t<span>hese are two independent clauses and should be separated by a semi-colon or a period not a comma. Hope this is what you are looking for. </span>
Alone and lonely have similar definitions but different connotations. Being alone is most often about literally being isolated/away from others, but being lonely is more a feeling of isolation. I hope this helps!