Step 1: Analyzing the options.
- Buddhism (A) teaches Nirvana, which is liberation from suffering, hence it matches with III.
- Samkhya (B) is based on the concept of Moksha, which is liberation from the cycle of birth and death, hence it matches with II.
- Mimamsa (C) focuses on Kaivalya, which is the concept of absolute liberation, hence it matches with I.
- Vedanta (D) emphasizes Apurva, which is the idea of the inherent potential to reach liberation, hence it matches with IV.
Step 2: Conclusion.
The correct answer is Option 3.
Final Answer:
\[
\boxed{\text{The correct answer is 3. A - III, B - II, C - I, D - IV.}}
\]