Step 1: Understanding the Question:
This question tests knowledge of gum-yielding species.
Step 2: Detailed Explanation:
Gum karaya is obtained from Sterculia urens, but Acacia auriculiformis is sometimes used for gum extraction.
Wait, the correct source of gum karaya is Sterculia urens.
But the options don't include Sterculia urens.
Dipterocarpus indicus (B): Produces resin.
Tectona grandis (C): Timber species.
Terminalia alata (D): Timber species.
Thus, Acacia auriculiformis is the best option.
Step 3: Final Answer:
Thus, Acacia auriculiformis is used for gum extraction, which corresponds to option (A).
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