The 4 Essential Functions of Parliament in the Canadian System

I've been reading CES Franks' The Parliament of Canada. Here is one quote that stood out to me - especially this week:

There are 4 essential functions of parliament in the Canadian system:

1. To make a Government -- That is, to establish a legitimate government through the electoral process.
2. To make a Government work -- That is, to give the government the authority, funds, and other resources necessary for governing the country.
3. To make government behave -- That is, to be a watchdog over the government.
4. To make an alternative government -- That is, to enable the opposition to present its case to the public, and become a credible choice for replacing the party in power.

Important to keep these 4 essential functions in mind.