Final answer:
June's proposal is aimed at reducing packaging-related costs by switching from bubble wrap to foam-based materials, with the purpose being most accurately represented by Option 3.
Step-by-step explanation:
The purpose of June's proposal is best summarized by Option 3: Bubble wrap packaging has created increased costs every year, so the company should consider using foam-based packaging materials instead. This option not only captures the financial implications of the ongoing packaging issues but also suggests a proactive solution.
June highlights the cost of continuing with the inadequate bubble wrap and positions the foam alternative as a potentially more efficient and less costly option, given the context of packaging fragile items with materials like polystyrene that can offer improved protection.