Identify the preposition(s) in the following sentence:
They walked through the gardens of the palace.
a. they
b. through
c. the
d. through, of

Hint: Prepositions point out the location of the nouns in the sentence. They pinpoint where the noun is.

Complete answer:
A preposition, a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause.
This makes it easy to understand the context and meaning of the sentence.
For example, in the sentence ‘There is a cat under the table’, the word ‘under’ is a preposition, as it lets us know the location of the noun ‘the cat’.

Now, we know what prepositions are. Let’s look at the given options:

a. they - The word ‘they’ is a pronoun, as it is used in place of a noun. This means that it is not a preposition. So, this is an incorrect option.
b. through - The word ‘through’ is a preposition, as it conveys a location. However, it is not the only preposition in the sentence. So, this is an incorrect option.
c. the - The word ‘the’ is an article, this means that it cannot be a preposition. So, this is an incorrect option.
d. through, of - The words ‘through’ and ‘of’ are prepositions, as they convey the locations and relations of nouns in the given sentence. So, this is the correct answer.

Note: Identify the parts of speech of each option. Only choose the option which denotes a location of a noun. Do not confuse the word ‘the’ for a preposition.