Which organisms would have the most similar traits?
a. organisms in the same order
b. organisms in the same class
c. organisms in the same kingdom
d. organisms in the same phylum
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organisims in the same order

The correct answer is option A. "Organisms in the same order".

Explanation:

Scientist have developed a series of classifications  known as taxonomic ranks to classify organisms and their relationships. These biological classifications are made according to the organisms traits, where the major the rank the more broad and dissimilar the traits are, and the minor the rank the most similar the traits among the organisms. The order of the taxonomic ranks from major to minor are: domain, kingdom, phylum, class, order, family, genus, and species. Among the given options, "order" is the one that belong to minor ranks. Therefore, organisms with the same order will have the most similar traits.