Question

your burger is done at ____.
21°c (72°f)
41°c (106°f)
71°c (160°f)
a quarter to one

Explanation:

According to food safety standards, burgers (ground beef) should be cooked to an internal temperature of 71°C (160°F) to ensure harmful bacteria are killed. 21°C (72°F) is room - temperature, 41°C (106°F) is too low for safe cooking of ground meat, and "a quarter to one" is a time - related phrase which is not relevant to the cooking temperature of a burger.

Answer:

71°C (160°F)