Why did the nile river have a delta at its mouth

The Nile river had a delta at its mouth because the river carries sediment along with the water as the river flows through its banks. The river water deposits this sediment together when it flows into the larger body of water and forms land. 

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(iii) All of the above

Explanation:

In a parliamentary system, like that of the United Kingdom, or Canada, the parliament does all three functions.

It selects the goverment because the government is led by the Prime Minister, who is the member of parliament (MP) who leads the largest party, or who obtains the most support among MPs.

It controls, guides, and informs the government because it excercises the important functions of passing or rejecting government laws, approving or disapproving government ministers, and it issues and publishes information on many topics, to the government.

Finally, as explained above, the parliament is the body that makes the laws. While the government introduces legislation, it is up to the parliament to either pass or reject said legislation.