Sentence improvement — Identify whether any change is needed: ‘‘They are social insects, living in communities, regulated by definite laws, each member of society bearing well-defined and separate part in the work of a colony.’’ Choose the best option considering scientific-style apposition and participial phrasing.

Given sentence
They are social insects, living in communities, regulated by definite laws, each member of society bearing well-defined and separate part in the work of a colony.

Concept/Approach
The sentence uses non-finite (participial) phrases in apposition to the subject to compactly convey attributes. This scientific-register style is acceptable: ‘‘living in communities’’ and ‘‘regulated by definite laws’’ modify ‘‘social insects’’; the absolute construction ‘‘each member ... bearing...’’ is also standard in formal prose.

Option analysis
A: who are living in communities — Unnecessarily changes to a finite relative clause and shifts aspect.B: living among a community — Preposition ‘‘among’’ is awkward (community ≠ multiple individuals in this phrasing).C: who lives with a community — Subject–verb disagreement (‘‘who lives’’) with plural ‘‘insects’’; ‘‘with a community’’ is odd.D: No improvement — Best preserves grammatical and stylistic intent.

Common pitfalls
Forcing a relative clause where concise participial apposition reads more naturally in academic description.

Final Answer
No improvement