YAML vs JSON

A.

The correct answer is A. Users can comment in YAML but not in JSON.

YAML and JSON are both popular data serialization languages that are commonly used in various software development contexts. While they share many similarities, there are also some key differences between the two.

One of the main differences is that YAML allows users to add comments to their code, while JSON does not. This is because YAML was designed to be human-readable, with a focus on ease of use and flexibility. Comments in YAML are denoted by the '#' symbol, and they can be used to provide additional context or explanations for specific sections of code.

In contrast, JSON was designed to be a lightweight and efficient data interchange format for web applications. It is based on a simple syntax that uses curly braces to enclose objects and square brackets to denote arrays. While JSON does not support comments, it is widely used in web development because it is easy to parse and can be used with a variety of programming languages.

Option B in the question is incorrect, as both YAML and JSON use different types of brackets for different purposes. YAML uses hyphens for lists and colons for key-value pairs, while JSON uses curly braces for objects and square brackets for arrays.

Option C is also incorrect, as both YAML and JSON can be used in a variety of software development contexts, including web development and back-end systems. While JSON is commonly used in web applications, YAML is often used in configuration files and other settings where human-readability and ease of use are important.

Option D is incorrect as well, as YAML is still a widely used data serialization language that is actively maintained and updated. While JSON has gained popularity in recent years, YAML remains a viable option for many software development tasks.