From the passage, the reader can conclude that Cecily plans on traveling abroad.
wishes she were smarter.
values looks over knowledge.
wants to be more responsible.

From the passage, the reader can conclude that Cecily   values looks over knowledge.

Explanation:

Oscar Wilde's "The Importance of Being Ernest" is a farcical comedy play where the protagonist made up another identity to escape the social obligations whenever he wants to. This play delves into the theme of class, marriage, social responsibility, and the higher English class and their lifestyle.

In the given excerpt from the play, Cecily, the ward of John Worthing complains to Miss Prism about how learning German makes her "look quite plain". She thinks that there is no use in learning the language and couldn't understand why "Uncle Jack" would want her to learn that learning. This shows she values appearance and looks over knowledge.

Thus, the correct answer is the third option.

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)