Which statement best describes how to import a namespace in PHP?

The statement that best describes how to import a namespace in PHP is "use myapp\utils\hello." In PHP, the use keyword is specifically designed to import namespaces or classes from other namespaces into the current scope, allowing you to use them without needing to specify the full namespace path every time.

When you write use myapp\utils\hello;, you are effectively telling the PHP interpreter that within the current file or scope, you wish to work with hello from the myapp\utils namespace. This promotes code readability and maintainability, as it avoids long and cumbersome namespace declarations throughout your code.

The other options do not correctly represent how namespaces are imported in PHP. For instance, the option that suggests simply writing import or include is not consistent with PHP’s syntax for namespace management. The namespace keyword is used to define a namespace rather than to import it. Thus, using the use keyword is the proper method to bring a namespace into the current file's context.