How can dates be formatted in Avaloq Script?

The correct choice is the use of the "formatDate(date, format)" function. This function is designed specifically for formatting date values in a structured manner. It allows developers to define how the date should appear by specifying a format string, making it very flexible for various output needs. For instance, you can use different format codes to indicate whether you want the full month name, abbreviated day, year, etc. This method is widely adopted in coding practices when precise and formatted output of date values is necessary.

In contrast, the other methods do not provide the same level of control or utility for formatting dates. While the "toString()" method may convert dates to string representations, it does not allow for customized formatting. String concatenation is a more basic operation that would not manage the complexities of formatting dates properly, as it relies on simply joining strings rather than structuring date outputs. The "dateFormat()" function is not typically recognized in Avaloq Script, making it an invalid option in this context. Hence, the "formatDate(date, format)" function distinctly stands out as the appropriate answer for formatting dates effectively within Avaloq Script.