Answer:

Introduction:
This question is related to the use of articles in English grammar. It specifically asks about the use of articles before the word "girl" in the given sentence. The correct answer is option 'C', where the definite article "the" is used before the word "girl."

Explanation:
In English grammar, articles are used to indicate the specificity of a noun. There are three types of articles: definite article ("the"), indefinite articles ("a" and "an"), and zero article (no article). The choice of article depends on whether the noun is countable or uncountable, and whether it is specific or non-specific.

Usage of Articles:
The given sentence is "Do you remember _____ girl that we saw last night?" Let's analyze the options:

a) "a" - This is the indefinite article and is used before a singular countable noun when it is non-specific. In this sentence, the use of "a" would imply that the speaker is referring to any girl, rather than a specific girl. However, the sentence mentions "the girl," indicating that a specific girl is being referred to. Hence, option 'a' is incorrect.

b) "an" - This is also an indefinite article, but it is used before a singular countable noun starting with a vowel sound. Since "girl" starts with a consonant sound, "an" is not appropriate in this context. Therefore, option 'b' is incorrect.

c) "the" - This is the definite article and is used before a singular or plural countable noun when it is specific. In the given sentence, the speaker is referring to a particular girl that they saw last night. The use of "the" before "girl" indicates that the speaker and the listener have a specific girl in mind. Hence, option 'c' is the correct answer.

d) No article - Sometimes, a noun can be used without any article. This is known as the zero article. However, in the given sentence, the speaker is referring to a specific girl, so the use of a definite article is necessary. Hence, option 'd' is incorrect.

Conclusion:
In conclusion, the correct answer is option 'C', which uses the definite article "the" before the word "girl." This choice indicates that the speaker is referring to a specific girl that they saw last night.