Question

which describes the modern classification system?
based on evolutionary relationships
called linnaean classification
based on similar appearances
called darwinian classification

Explanation:

The modern classification system is based on evolutionary relationships. Linnaean classification was an earlier system based more on physical characteristics. Darwinian is not the name of the classification system. And basing it just on similar appearances is too simplistic as it doesn't account for evolutionary history.

Answer:

Based on evolutionary relationships.