How does the structure of an online analytical processing $($OLAP$)$ database shape its core functionality?

Multiple choice question.

Its tight integration with popular, front$-$end tools such as Microsoft Excel enables users to create more user$-$friendly views of data and complex reports with illustrative graphs, including three$-$dimensional graphs and simulations.

Its ability to link online databases and offline, back$-$end databases in different locations allows users to conduct simultaneous queries and analysis of multiple stores of data that have not been aggregated or collected in a data warehouse.

Its use of data cubes allows users to conduct complex queries, analyses, and modeling by taking multiple dimensions of data $($types or levels$)$ into account and viewing data from multiple viewpoints or $$slices$($such as by date and location$).$