Select the most appropriate option to fill in the blank.

I am not going to buy ______ toys for you.

these

The most appropriate option to fill in the blank is:these

The sentence should be: "I am not going to buy these toys for you."

Explanation:
- "These" is used to refer to specific objects that are near to the speaker or have been previously mentioned.
- In this sentence, the speaker is referring to a specific set of toys, so "these" is the appropriate demonstrative pronoun to use.
- Therefore, "these" is the correct choice to fill in the blank.