Step 1: Understanding the Question:
This question tests knowledge of plant breeding methods.
Step 2: Detailed Explanation:
Backcrossing is used to transfer a specific trait from one variety to another.
It involves crossing a hybrid with one of its parents.
Heterosis breeding (A): For hybrid vigour.
Recurrent breeding (B): For population improvement.
Mass selection (D): For selecting desirable plants.
Thus, the correct answer is backcrossing.
Step 3: Final Answer:
Thus, backcrossing is used to transfer specific traits, which corresponds to option (C).
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