Uncomfortable was the beauty queen's ride atop the float.
what is the subject?
a. uncomfortable
b. float
c. queen
d. ride

D. ride is your answer.

Because uncomfortable is describing the beauty queen's ride, the float isn't what they are describing, and queen's is not the answer either because it isn't the subject it is what is possessing the subject.

I hope that this helped! ^.^

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.

- "in the declaration of independence, it is stated that all people have certain rights that can't be taken away. when the government fails to protect these rights, the people have no choice but to remove that government and replace it with a government that will do its job and protect the people's rights."