Why does the king ask Winston Churchill to do? In Blood, toil, tears and sweat.

What the king asks Winston Churchill to do is:

The king asks him to form a Government.

Explanation:

"Blood, Toil, Tears, and Sweat" is a famous speech given by Winston Churchill when he became Prime Minister. At the beginning of the speech, Churchill says:

"On Friday evening last I received his Majesty's commission to form a new Administration."

Anyone who is elected Prime Minister in England will be called by the king or queen and asked to form an Administration in his or her name. That means the Prime Minister will choose those he or she thinks best for different governmental positions. The purpose is to find and choose those who will help forward policies that will support the Prime Minister's plans to manage the nation properly.

the answer f probably

an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference.