<u>a. Creating a representative sample is correct</u>
<u></u>
Explanation:
<u>Rarefaction </u>is a method which is used to find the species richness by sampling. Rarefaction finds out the number of species present in the ecological community with the help of the rarefaction curve.
This Rarefaction curve is based on the number of species and the number of an individual sample.The curve size will increase first because the common species are detected after that curve will become plateau because only rarest species are there for the sampling.
Rarefaction in terms of ecology can be defined as a technique used to assess species richness from the results of sampling.
It allows the calculation of richness of a particular species for a given number of individual samples, and these are based on the construction of rarefaction curves.
Hence, the correct answer is: option A-Creating a representative sample
