Question: what is the easiest way to find a row in matrix

This is probably a dummy question. I have a matrix (3 columns, 4 rows). I would like to extract the rows in which the value in the third column matches "2". As long as one has a matrix of 2 columns, this can be easily done by using the Lookup command but it does not allow you to give the row values of multiple columns. Is there another command that allows you to do that?

Thank you in advance for your help.

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