Calculate the birth rate if there were 80 rabbits in a field last year and 32 new rabbits were born this year through reproduction.

0.4 offspring per rabbit per year

The correct answer is Option (1) -0.4 offsprings per rabbits per year

To calculate the birth rate, you need to find the average number of offspring produced per rabbit per year. You can do this by dividing the total number of new rabbits added this year by the number of rabbits in the field last year:

Birth Rate = (Number of New rabbits) / (Number of rabbits Last Year)

Birth Rate = 32 / 80

Birth Rate = 0.4

So, the birth rate is 0.4 offspring per rabbit per year, which corresponds to option (1): "0.4 offspring per rabbits per year."