Step 1: Recall how it is made:
HDPE forms at low pressure with a Ziegler-Natta catalyst. The chains stay unbranched and pack tightly.
Step 2: Properties:
Tight packing gives a higher density, higher melting point, greater hardness and good chemical resistance.
Step 3: Use:
Those qualities suit blow-moulded containers like shampoo and detergent bottles.
Step 4: Why this use fits:
Shampoo bottles must stay stiff, resist the chemicals in the liquid and survive being squeezed many times. The tightly packed chains of HDPE give this strength and chemical resistance, which is why option (B) is the use matched with HDPE.
Final Answer:
Option (B).
\[ \boxed{\text{Shampoo bottles (B)}} \]