Which sentence contains a nonrestrictive clause that is punctuated correctly? my boss—who was recently promoted again is great at motivating her employees. my boss, who was recently promoted again, is great at motivating her employees. my boss who was recently promoted again—is great at motivating her employees. my boss, who was recently promoted again is great at motivating, her employees.

My boss, who was recently promoted again, is great at motivating her employees.

Explanation: A nonrestrictive clause is always surrounded by punctuation marks (commas, parentheses or dashes) to clearly define the information that could be removed from the sentence without altering its meaning. The dashes in options 1 and 3 combined would also make a correct sentence, but not on their own. In the last option, the second comma is wrong for two reasons: it is outside of the relative clause and it is separating the verb motivating from the object her employees.

Explanation:

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)

merry christmas to you, too. may god be with you all in doing your work and just living a great life in general! < 3