A cohort is a group correlated with
Families
The correct option is D.
Explanation of the correct option:
Explanation of the incorrect options:
Option A:
Order is a rank of families, sharing similar characters.
Option B:
Genera is a group into which animals, plants, etc. that have similar characteristics are divided, smaller than a family and larger than a species.
Option C:
Species is a smallest rank in taxonomy and each organism of a species has similar characteristics.
Final answer: A cohort is a group correlated with families.