If all of the individuals of the little brown bat species in the albany cave are killed by a fungus, then the of little brown bats has been killed off.\

Answer;

The population of "little brown bats" has been killed off.

Explanation;

-White-Nose Syndrome was first documented in 2006 in a tourist cave near Albany, New York. Dead and dying bats were then found in four nearby caves, 30 km west of Albany.

-The fungus appears to be the cause of a disease called white-nose syndrome, which has killed more than a million bats in the past four years. It even threatens some of the continent’s most abundant bat species with extinction.

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation: