Among the factors that might influence the choice of a software development process model, let us focus on two:
r: the degree to which the stakeholders and team members understand the stakeholders' requirements in the early days of the project.
a: the level of agreement that the team shares on the likely architecture of the system.
consider the 4 extreme combinations of high/low values of r and a.
the team has past experience working under the waterfall model. for each of these four cases, should they stay with that model or consider moving to some other model?
low r, low a
high r, high a
low r, high a
high r, low a

Jason, samantha, ravi, sheila, and ankit are preparing for an upcoming marathon. each day of the week, they run a certain number of miles and write them into a notebook. at the end of the week, they would like to know the number of miles run each day, the total miles for the week, and average miles run each day. write a program to them analyze their data. your program must contain parallel arrays: an array to store the names of the runners and a two-dimensional array of five rows and seven columns to store the number of miles run by each runner each day. furthermore, your program must contain at least the following functions: a function to read and store the runners’ names and the numbers of miles run each day; a function to find the total miles run by each runner and the average number of miles run each day; and a function to output the results. (you may assume that the input data is stored in a file and each line of data is in the following form: runnername milesday1 milesday2 milesday3 milesday4 milesday5 milesday6 milesday7.)