Kendall tracked the amount of water her windowsill plant needed each week over ten weeks. which of the following is true? a. there is a positive association between the number of weeks and the amount of water the plant needed. b. there is no association between the number of weeks and the amount of water the plant needed. c. there is both a positive and negative association between the number of weeks and the amount of water the plant needed. d. there is a negative association between the number of weeks and the amount of water the plant needed.