The correct answer is: B. angle brackets

When using the standard files that come with the C++ compiler, you should surround the header file name with angle brackets (< >). This is because the standard files are part of the C++ standard library, and the angle brackets are the syntax used to include files from the C++ standard library.

The other options are incorrect because they are not the correct syntax for including files from the C++ standard library. Square brackets ([]) are used to include files that are not part of the C++ standard library, parentheses (()) are used to group expressions, and quotes (“) are used to

Here is an example of how to include a standard header file in a C++ program:

“`c++

include

int main() {
std::cout << “Hello, world!”;
return 0;
}
“`

In this example, the iostream header file is included using the angle brackets. This tells the compiler to include the contents of the iostream file into the program. The iostream file contains the definition of the std::cout object, which is used to print to the standard output stream.

I hope this explanation is helpful. Please let me know if you have any other questions.