Which of the following data manipulation techniques should an analyst use to hide unnecessary data during analysis?

Filtering is a data manipulation technique that allows an analyst to display only the data that meets specific criteria, effectively hiding all other unnecessary records or values from view. This helps in focusing the analysis on relevant information and reducing clutter.

Parametrization involves using parameters to make reports or queries dynamic, but it's not primarily a technique for hiding unnecessary data directly.

Sorting arranges data in a specific order (ascending or descending), which helps organize data but does not hide or remove any data from view.

Indexing is a database optimization technique used to speed up data retrieval, but it does not hide or manipulate the visibility of data for analysis.