EVERYDAY SCIENCE

Detailed explanation-1: -(iv) A small population is most likely to be extinct.

Detailed explanation-2: -A species is said to be extinct when it no longer lives anywhere on the planet.

Detailed explanation-3: -A small population is then more susceptible to demographic and genetic stochastic events, which can impact the long-term survival of the population. Therefore, small populations are often considered at risk of endangerment or extinction, and are often of conservation concern.

Detailed explanation-4: -Small populations tend to lose genetic diversity more quickly than large populations due to stochastic sampling error (i.e., genetic drift). This is because some versions of a gene can be lost due to random chance, and this is more likely to occur when populations are small.