Correct Answer: Some

Solution : 'Some' is the correct answer.
Explanation:

Adjectives are words that describe or change nouns.

- It is clear from the phrase that we require a quantity adjective to fill in the blank.
- A quantity adjective indicates how much of a thing is intended.

- For example, some milk, enough water, no manners, and so on.

- Because the quantity isn't specified here, we'll use some to fill in the blank.

The complete sentence will be: She went to add some milk to her coffee.

- As a result, option 2 is the correct answer.

Further Information

- The adjectives 'two, fifth, and seven' are numerical adjectives.

- Adjectives of numbers indicate how many people or things are meant, as well as the order in which they are meant.