What Vs Which In Questions. And be OK grammatically. These rules are actually older than the words themselves.
Therefore it will be used when the question WhatWho. Which Is Why or That Is Why. Note also that Quel is an adjective so it always relates to a noun thingperson.
What is that relative to other elements.
It doesnt always work the other way around however. If you are trying to make a choice what is used to ask when there are an unknown number or infinite possibilities for an answer. The standard rule of grammar is that the usage of that vs. 5 rows Jun 02 2011 Side by Side Comparison Which vs What in Tabular Form.
