Agree or disagree? And why? 11. Most people are followers, not leaders.
Reasoning:
12. Our environment can greatly impact the course of our lives.
Reasoning:
13. There is a "beast" within each and every one of us.
Reasoning:
14.
People are essentially good at heart.
Reasoning:

11. agree. many people choose to follow others actions as a way to fit in with society.

12. agree. obviously our environment can impact our lives. just like corona virus is impacting our course right now. many people are struggling to go to school or work throwing their whole live off course

13. disagree. while many people have a dark side or a "beast" inside of us, some people can be pure and really do not have a beast in them.

14. disagree. not everyone has good intentions or wants to be good. some people are just sick. for example, murders who do it without reason are just completely sick and obviously aren't good at heart.

these are just my opinions lol

taking into account that a theme is the central topic a text treats and can be developed through a story, play, poem etc. the following are themes that can be further developed:  

my best friend jeffrey has many unusual interests. (the story could be about each of the unususal interests)

once a man gives his soul over to evil, he can never go back. (this could be a saying or a proverb)

the three sheepdogs lay around the yard all day. (it could be developed detailing how each of these sheepdogs lay around)

a priest's collar has an unusual effect upon people. (it could be developed detailing the different effect upon people)

innocence is a powerful force in a world full of corruption. (it could be developed detailing how is a world full of corruption)

king lear is a play shakespeare wrote later. (it is just a sentence and doesnt give any idea or topic to be discussed in details.

evil often wears the disguise of innocence. (this could be a saying or a proverb)

the narrator is saying that the old lady made her feel uncomfortable. you know this because they say "i found that rather irksome", "perhaps it was her being so upright and trim", and "i don't think it was that, because i thought that quaintly pleasant." hope this !