Write an essay stating your opinion on wether a person can choose to be happy.

As with an essay, one should always plan out what they are going to write.  I suggest looking up the four-square writing process.  This will help you to organize your writing.  The easiest way to get started on this, is to start with the thesis statement.  It should read, "I believe a person can (or cannot) choose to be happy becauseand list the three reasons why you think they can or cannot make that choice.  Then the three reasons you have listed will be the topics for your three body paragraphs.  End the essay with a conclusion where you restate the thesis statement, summarize what you have written, and DOES NOT include any new information.  Tips for the introduction:  give some background information, a personal tie-in, and a tie-in with the audience.

the correct answer can either be a or b because it could be both but you should probally choose b

the answer is:

when will (v) the books (n) be (v) due?

nouns refer to people (other than pronouns), places and things, whereas verbs describe actions and are usually part of the predicate of a sentence. finally, pronouns can work as nouns and identify the participants in speech.

in the example sentence, "will" is a verb part or auxiliary verb, "be" is an infinitive verb and "books" is a plural noun.