Final answer:
A burn down chart is used to provide a daily measure of work remaining in an iteration in Agile project management.
Step-by-step explanation:
The correct answer is A. Burn down chart. A burn down chart is a type of information radiator used in Agile project management. It visually represents the amount of work remaining in an iteration by plotting it against time. The chart starts at the total amount of work at the beginning of the iteration and shows how much work is completed each day until the end of the iteration.