Final answer:
In JSON, indexes start with 0, making it zero-indexed like many other programming languages, which is important for data manipulation.
Step-by-step explanation:
The JSON indexes start with A) 0. JSON arrays are zero-indexed, meaning the first element in the array is accessed with the index 0. This is similar to many other programming languages like Java, C, and Python where array indexing begins at 0. Understanding this is crucial when you're working with arrays in JSON data in any programming or scripting language that supports JSON.