An early challenge met by McDonald’s was how to produce French fries when potatoes were out of season. Freezing uncooked potatoes didn’t work very well. The answer was discovered by a Wisconsin McDonald’s franchisee: partially cooking the fries before freezing them.

How many South American countries are members of the British Commonwealth of Nations?

A) None

B) 1

C) 2

D) 3

Answer Monday

Thursday’s answer: Chicago’s O’Hare International Airport was named for Chicago resident Edward “Butch” O’Hare, who was the first World War II naval aviator to receive the Medal of Honor.