正解:C
The valid JSON syntax among the options provided is represented by Option C. In JSON (JavaScript Object Notation), data is organized in name/value pairs, and curly braces {} hold objects, while square brackets [] hold arrays. The keys and string values are enclosed in double quotes. The JSON syntax provided in Option C correctly follows these rules, making it a valid JSON object.
References := For more information on JSON syntax and validation, you can refer to resources like JSONLint1 and W3Schools