Concept:Antonyms are words with opposite meanings. 'Imitate' means to copy or follow someone. Its antonym should mean to create something new or original.
Explanation:'Imitate' means to copy someone's behavior, style, or actions.
Options A (Replicate), B (Copy), and D (Echo) all mean to repeat or mimic something. They are similar to imitate, not opposite.
Option C (Innovate) means to introduce new ideas or methods. It is the direct opposite of imitating because it involves creativity and originality.
For example, a student who copies is imitating, while one who thinks of a new solution is innovating.
Hence, 'innovate' is the correct antonym.
Answer:C. Innovate