Step 1: Understanding the Question:
This question tests knowledge of fibre-yielding tree species.
Step 2: Detailed Explanation:
Grewia optiva yields strong white fibres from the bark of its branches.
It is used for making ropes and coarse fabrics.
Ficus bengalensis (A): Not a fibre-yielding species.
Lannea coromandelica (B): Not a fibre-yielding species.
Hopea odorata (D): Timber species.
Thus, the correct answer is Grewia optiva.
Step 3: Final Answer:
Thus, Grewia optiva yields strong white fibres from the bark, which corresponds to option (C).
[0.5cm]