Concept:A programming language provides instructions that a computer can follow to perform tasks.
This question tests your ability to separate programming languages from other computer items.
Explanation:Java and C++ are clear examples of programming languages used in software development.
HTML is a markup language used for web page design.
ios, however, is the operating system used on Apple devices such as the iPhone and iPad.
It manages hardware and software but does not provide programming instructions.
An operating system is not a language, so it cannot be a programming language.
Therefore, ios is the correct answer among the given options.
Answer:D. ios