What is the combined effect of using the "+" operator with two sets?

The use of the "+" operator in Qlik Sense is significant in the context of set operations. When you apply the "+" operator between two sets, it combines the records from both sets by summarizing those that are present in either set. This means that it includes all unique records from both sets, effectively creating a new set that reflects the union of the two.

This behavior aligns well with the idea of summarizing the records, as it aggregates the data without duplicating the common records that might exist in both sets. Therefore, the correct answer accurately describes how the "+" operator functions, making choice C a suitable explanation of its effect.

The other options describe different behaviors that do not match the functionality of the "+" operator. For instance, filtering records or excluding entries does not correlate with the addition of two sets, as the "+" operator is designed to pull together data rather than restrict it. This distinction helps clarify the specific role of the "+" operator in set operations within Qlik Sense.