Which statement describes the likely effect of the intervention by farmer on the sheep population ...

A sheep farm is located on a plot of land 2.00 km by 3.00km. There are 848 female sheep and 52 male sheep on the farm. The farmer has constructed shelters for the sheep and provides them with food and water to supplement the pasture that is naturally available
Numerical Response
Calculate the population density (sheep/km^2) of the sheep on this farm
Record your answers rounded to three significant digits

Which statement describes the likely effect of the intervention by farmer on the sheep population growth rate r?
a) r would be negative because b would increase and d would decrease
b) r would be positive because b would increase and d would decrease
c) r would be positive because b would decrease and d would increase
d) r would be negative because b would decrease and d would increase