Step 1: Understanding the Question:
This question tests knowledge of fast-growing tree species for pulpwood.
Step 2: Detailed Explanation:
Ailanthus excelsa is a fast-growing tree species suitable for paper pulp.
It is commonly used in agroforestry.
Abies pindrow (A): A timber species.
Ceiba pentandra (B): Kapok (fibre).
Salix alba (D): Willow (not common for pulp).
Thus, the correct answer is Ailanthus excelsa.
Step 3: Final Answer:
Thus, Ailanthus excelsa is a fast-growing species for paper pulp, which corresponds to option (C).
[0.5cm]