Question

Which of the following would be a good control and constants for his experiment?

A. The control is a similar balloon left in the shop measured before and after the delivery. The constants are the type of balloon and the amount of gas put into the balloon
B. The control is the amount of gas put into the balloon. The constants are the type of balloon, and the time of day for the delivery
C. The control is the type of balloon. The constants are the day of the week he delivers, and the amount of gas in the balloon
D. The control is a balloon measured in the shop each day. The constants are the time of day for the delivery and the kind of balloon

Answer 1

Option A is correct because it identifies a similar balloon left in the shop as the control, while the type of balloon and amount of gas are constants that remain the same for all experimental conditions.

Step-by-step explanation:

The best control and constants for this experiment would be: A. The control is a similar balloon left in the shop measured before and after the delivery. The constants are the type of balloon and the amount of gas put into the balloon. In this scenario, the control is the balloon that is not exposed to the delivery conditions, serving as a benchmark against which other balloons can be compared. The type of balloon and amount of gas are constants because they are kept the same across all experimental groups to ensure that any observed differences in results are due to the delivery conditions alone, and not to variations in balloon type or amount of gas.