The correct answer is B) Manufacture of toys. Here's why:
HDP (High-Density Polyethylene): HDP is a rigid, strong, and versatile plastic with a wide range of applications.
Let's analyze each option:
A) Insulation of electric cables: LDPE (Low-Density Polyethylene) is more commonly used for electrical insulation due to its flexibility and electrical properties.
B) Manufacture of toys: HDP is perfect for toys because of its durability, chemical resistance, and ability to be molded into various shapes.
C) Submarine cable insulation: Submarine cables require specialized materials with extreme durability and water resistance. HDP is not typically used for this purpose.
D) Producing extruded films: While HDP can be used for film extrusion, it is not the most common choice compared to other types of polyethylene.
Key Point: HDP's properties make it ideal for manufacturing toys that need to withstand rough handling and maintain their shape.