Help me !! Select all cases where there is a causal relationship.
A)
There is a strong positive correlation between the number of cigarettes consumed and the number of lung cancer diagnoses.
B)There is a moderate positive correlation between the amount of bread a family eats per month and the amount of oranges sold per month in the South of the U. S.
C)The number of stops a school bus makes on the morning route is negatively correlated with what the students eat for lunch.
D)
There is a strong positive relationship between the number of touchdowns per football game and the final score of the football game.
E)There is a negative linear association between shoe size and reading score.

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?