How do you extract the first 5 characters from the string str?

To extract the first 5 characters from the string str, the correct approach uses the method substring(0, 5). This method indicates the start index and the end index of the substring you want to extract.

In this case, using substring(0, 5) starts at index 0, which is the beginning of the string, and goes up to, but does not include, index 5. Since string indices are zero-based, this captures the characters at indices 0 through 4, which effectively gives you the first five characters of the string.

Other options do not correctly follow the syntax or logic for extracting a substring. For instance, specifying an index of 5 would start extraction from the sixth character, meaning you would miss the first five characters entirely. Therefore, using substring(0, 5) is the proper syntax and logic for this operation.