Answer:
Option 2)

Explanation:
Given : The number of white-winged cross bills in an area can be represented by the formula C = 550(1.08)^t
General Growth Formula:

where, A = Amount after growth
P = Original amount
r = yearly growth rate
t= number of years
Comparing Formula C with the general formula:
A=C, P=550, t=t and (1+r)=1.08⇒r=0.08
Now, we have to find the equation represent the number of white-winged cross bills in terms of the monthly rate of population growth.
For monthly, the rate is divided by 12 and time is multiply by 12.
i.e,
and

The new equation formed →


From the following formula option 2) is matched
Therefore, Option 2) is the correct answer.