Step 1: Understanding the Word:
The word means "having self-government; acting independently."
Step 2: Analyzing the Spelling:
The word is formed from 'auto-' (self) and 'nomos' (law), with the adjective suffix '-ous'.
Let's check the options:
(A) Autonomouse - Incorrect ending, resembles 'mouse'.
(B) Autonomous - Correct spelling, with the '-ous' ending.
(C) Autonomes - Incorrect plural-like ending.
(D) Autonomus - Incorrect ending, uses '-us' instead of '-ous'.
Step 3: Final Answer:
The correctly spelt word is Autonomous.