Which of the following packaging elements has a direct impact on a product's shelf life?Graphic designBrand messagingMaterial compositionPrice tag placement

The packaging elements that have a direct impact on a product's shelf life is Material Composition.

Explanation:

1. Material Composition: The type of materials used in packaging, such as plastics, metals, or glass, plays a crucial role in protecting the product from environmental factors such as air, moisture, and light, which can lead to deterioration. For instance, vacuum-sealed packaging can greatly extend the shelf life of food products by minimizing oxygen exposure.

2. Graphic Design and Brand Messaging: While important for marketing and consumer appeal, graphic design and brand messaging do not influence the actual physical properties of the packaging concerning shelf life.

3. Price Tag Placement: This is primarily a marketing strategy and does not affect the product's shelf life.

In summary, among the options provided, material composition is the most significant factor in determining how long a product can remain on the shelf without losing quality.