Answer: Second option is correct.
Step-by-step explanation:
Since we have given that
The population of a species of rabbit triples every year is expressed as
[tex]f(x)=4(3)^x[/tex]
Here, Initial population = 4
Rate of growth = 3
Number of years = x
So, we have [tex]f(5)=972=4(3)^5[/tex]
So, it means 972 is the population of the rabbits after 5 years.
Hence, Second option is correct.