Explanation:

- Idiom Explained: "Counting your chickens" originates from the saying "Don’t count your chickens before they hatch." It suggests not assuming a positive outcome before it’s certain.

- Options and Meanings:

- Option 1: Confident of success - Correct Answer: It matches the idiom, reflecting undue confidence in a favorable result before it actually happens.

- Option 2: Greedily accumulating wealth - This does not relate to the idiom's meaning. It's more about excessive desire for money.

- Option 3: Being careful about spending - This is unrelated as the idiom is about assumptions, not caution in spending.

- Option 4: Getting scared because of danger - This implies fear, which is not the intent of the idiom.