Which two functions can be used together to filter records based on presence of a string within a column's values?

The correct answer is WHERE, SIMILAR TO because the WHERE clause is used to filter records based on specific conditions, and the SIMILAR TO function in SQL allows for pattern matching with more advanced regular expression-like syntax compared to LIKE. When combined, WHERE, SIMILAR TO can filter records based on the presence of a string or pattern within a column’s values, making it more flexible for complex string matching scenarios. This combination enables more precise filtering of records by allowing patterns to be specified in a more robust way. The WHERE, LIKE combination is also commonly used, but SIMILAR TO provides greater flexibility for pattern matching. The other options, COLLECT and CONCAT, do not serve the purpose of filtering based on string presence within a column.