Question

what is an effect of la niña?
a. fish populations off the coast of peru decrease.
b. florida
c. alaskan fish populations increase.
d. south america becomes drier than normal.

Explanation:

La Niña typically leads to increased upwelling off the coast of Peru, which can support fish populations, so A is incorrect. Alaska is not directly and specifically known for a typical fish - population - increasing effect due to La Niña. During La Niña, South America (especially the northern part) often experiences wetter than normal conditions, not drier. Florida can experience more hurricane activity during La Niña. But the most accurate and direct effect among the given options is related to the weather and precipitation patterns in South America during La Niña. However, the options seem to have some inaccuracies or incompleteness. But based on the knowledge of La Niña effects, South America generally has wetter conditions rather than drier during La Niña.

Answer:

None of the options are completely correct based on typical La Niña effects. But if we assume the best - fit among the given ones with some inaccuracies, the closest might be that the description in the options is wrong as South America usually gets wetter during La Niña rather than drier as stated in D. If we had to pick one, none of the above would be a more appropriate answer if available.