The british parliament act of 1911

eliminated the house of lords

made the house of lords an elected body

limited the power of the house of lords

removed anglican bishops from the house of lords

The missing answer to the statement above is: Limited the power of the House of Lords which is what the British Parliament Act of 1911 is. This was initiated by the House of Commons. It states that so long as the provisions of the said Act is followed, they can pass the legislation without going thru House of Lords.