Final answer:
If more fish immigrate to the area, the fish population will likely increase (Option A).
Step-by-step explanation:
The influx of more fish through immigration typically leads to an increase in the local fish population. Immigration introduces new individuals to the existing population, potentially enhancing genetic diversity and contributing to higher reproductive rates. Additionally, the availability of more individuals can lead to increased opportunities for mating and successful reproduction, further fostering population growth. However, the impact on the fish population also depends on factors such as habitat suitability, resource availability, and competition.
Options B, C, and D are less likely outcomes in the context of increased immigration. A decrease in population (Option B) would be unlikely unless accompanied by adverse environmental conditions or increased competition. The fish population remaining the same (Option C) or becoming extinct (Option D) is not the typical result of immigration but could be influenced by various ecological factors.
The arrival of more fish through immigration is likely to result in an increased fish population, considering the potential positive effects on reproduction and genetic diversity.