Step 1: Understanding the word "emulate."
"Emulate" means to imitate or strive to equal or excel, often in a positive or respectful manner. The word is often used to describe copying someone in a way that is meant to achieve similar success or quality.
Step 2: Analyzing the options.
- Echo refers to repeating or reverberating sound, which does not match "emulate" in terms of meaning.
- Reiterate means to say something again, which is not the same as emulating.
- Envy refers to feeling jealousy or desire for something someone else has, which is unrelated to emulating.
- Mimic means to imitate or copy, which is a direct synonym of "emulate."
Step 3: Conclusion.
"Mimic" is the closest in meaning to "emulate," as both refer to imitating someone's actions or qualities.
Thus, the correct answer is 4. Mimi(C)
Final Answer:
\[
\boxed{\text{The correct answer is 4. Mimi(C)}}
\]