Where is maximum diversity found?

The correct answer is Phylum

Concept:

• In biological classification, the hierarchy of taxa includes several levels, from broad to specific. These levels are Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
• Each level represents a rank in the classification system, where Phylum is one of the higher taxonomic ranks.
• Phylum groups together organisms that share a basic structural framework and certain key characteristics, making it a level with high diversity.

Fig: Taxonomic categories showing hierarchial arrangement in ascending order.

Explanation:

• Species: The species level is the most specific level of classification. It groups organisms that are capable of interbreeding and producing fertile offspring. While there is diversity within species, it is limited compared to higher taxonomic levels.
• Phylum: This is a higher taxonomic rank that groups together organisms based on fundamental body plans and structures. 
• Family: This rank is more specific than Order but more inclusive than Genus. It groups together related genera (plural of genus). 
• Genus: This is a rank above species and below family. It includes one or more species that are closely related