A.I. Explanation:

Option 1: "Awareness of health and environmental benefits"

Explanation: The text clearly states that the popularity of plant-based diets has soared due to a growing awareness of health, environmental, and ethical concerns. This directly supports the option, as it encapsulates the main idea of the text regarding the motivations behind the shift towards plant-based diets.

Option 2: "The scarcity of animal-based products"

Explanation: This option is incorrect because the text does not mention any scarcity of animal-based products as a reason for the popularity of plant-based diets. Instead, it emphasizes awareness of health and environmental benefits, making this option irrelevant.

Option 3: "The rising cost of meat and dairy products"

Explanation: The text does not discuss the cost of meat and dairy products as a factor influencing the popularity of plant-based diets. Therefore, this option is misleading and does not align with the main idea presented in the text.

Option 4: "The desire for more convenient meal options"

Explanation: While convenience may play a role in dietary choices, the text does not highlight it as a primary reason for the increasing popularity of plant-based diets. The focus is on health and environmental awareness, making this option incorrect.