As we go higher from species to kingdom, the number of common characteristics/features/similar traits goes on

The correct option is decreasing.

In biological classification, organisms are organized in a hierarchical system of taxonomic categories. The hierarchy, ordered from the lowest (most specific) to the highest (most general) level, is:
Species ⇒ Genus ⇒ Family ⇒ Order ⇒ Class ⇒ Phylum (or Division) ⇒ Kingdom

As we move upward from species to kingdom, the categories become broader and include a wider variety of organisms:
1. At the species level, organisms are highly similar, closely related, and share the maximum number of common characteristics.
2. As we transition to higher categories, different genera are grouped into a family, families into an order, and so on, bringing together increasingly diverse organisms.
3. Because the diversity of organisms increases at higher levels, the number of shared or common characteristics among the organisms in a group goes on decreasing. For instance, organisms in the Kingdom Animalia share far fewer common traits with one another than organisms within a single species.