Final answer:
When using the print() function, the programmer is responsible for including spaces in the output, as the function will not add extra spacing on its own.
Step-by-step explanation:
When using the print() function with a single parameter in many programming languages such as Python, the spacing in the concatenated result is the responsibility of the programmer. The print() function will output text exactly as it is provided, meaning if spaces are included in the strings, then these spaces will be reflected in the output.
However, if no spaces are provided, the print() function won't add any additional spacing between the characters or words. Therefore, it's important to manually include spaces where needed to ensure the output is readable and formatted correctly.