Final answer:
Protein shampoo is the best option for improving hair's strength, elasticity, and porosity as it contains proteins like keratin which help to repair and strengthen the hair.
Step-by-step explanation:
When looking for a shampoo that improves strength, elasticity, and porosity, the best option would be Protein shampoo (A). This type of shampoo is typically formulated with ingredients like keratin, which is a protein naturally found in hair that contributes to its strength and resilience. Using a protein-based shampoo can help to temporarily repair and strengthen the hair structure, improving its overall health.
Clarifying shampoos (B) are designed to remove buildup from the hair and scalp but do not necessarily improve hair's strength or elasticity. Moisturizing shampoos (C) infuse hair with moisture, which is important for overall hair health but may not specifically address protein loss. Lastly, Volumizing shampoos (D) can add volume and body to hair but do not focus on improving its structural integrity.