Answer:
Option A. 1440 guppies
Explanation:
In an appropriate environment, the population of breeding guppies doubles every 2 months.
Initial population of guppies = 180
after 2 months they doubles = 180 × 2 = 360
after 4 months they doubles = 360 × 2 = 720
after 6 months they doubles again = 720 × 2 = 1440
After 6 months guppies population would be 1440.