Fill in the blank with the most appropriate word.
“____”
“Yes, can I help you?
A) Thank you!
B) Cheers!
C) Excuse me!
D) Nothing much

Hint: A direct question is asked in an interrogative sentence, which often ends in a question mark. A query is referred to as an "interrogative sentence." Declarative sentences (which make statements), imperative sentences (which offer commands), and exclamatory sentences are all examples of interrogative sentences (which express emotion). The previous speech should have been intended to draw attention to the need for assistance.

Complete answer:
In the sentences given above, since the issue is about how help can be given, the previous speech should be about requesting assistance.
Now, let us look at the given options:
A) Thank you!: This option is incorrect because it does not ask for assistance, but rather expresses gratitude.
B) Cheers!: This option is incorrect because it does not ask for assistance, but rather expresses happiness.
C) Excuse me!: This is the correct option. The above question requires the first speech to ask for assistance because the second speech is a question asking how help can be provided. ‘Excuse me!’ is used to draw attention or ask for assistance.
D) Nothing much: This option is incorrect because the correct option is Option C.

Thus, the correct answer is option ‘C’ i.e, Excuse me!.

Note: Various types of sentences are:
- A declarative sentence simply states something or communicates a viewpoint. In other words, it declares something. A time marks the end of this type of sentence.
- A command or a request is given in an imperative sentence. It typically ends with a period, but it may also end with an exclamation point in some circumstances.
- A query is posed by an interrogative phrase. This sentence usually starts with who, what, where, where, why, how, or do and finishes with a question mark.