The correct answer is: C++.
Opera is a web browser developed by Opera Software. It was first released in 1995. Opera is available for Microsoft Windows, macOS, Linux, Android, and iOS.
Opera is written in C++. C++ is a general-purpose, object-oriented programming language. It is one of the most popular programming languages in the world. C++ is used to develop a wide variety of
applications, including web browsers, operating systems, and games.C is a general-purpose, procedural programming language. It is one of the oldest programming languages in the world. C is used to develop a wide variety of applications, including operating systems, embedded systems, and compilers.
Java is a general-purpose, object-oriented programming language. It is one of the most popular programming languages in the world. Java is used to develop a wide variety of applications, including web applications, mobile applications, and desktop applications.
None of these is the correct answer.