Answer: Talking to plants may or may not help plants grow faster because the amount of water given was likely different for each group.
Step-by-step explanation:
In the given situation, the growth of the plant is the dependent variable, which is affected by the talking and water which are the independent variables. The talking cannot be considered as the reliable variable for allowing the plant to grow but water is the basic necessity.
Not each group was given equal amounts of water thus talking to plants may or may not help in growth.