The correct answer is option 3: 2 and 4 only.

Bisphenol A (BPA) is an endocrine disruptor, meaning it can interfere with the normal functioning of hormones in the body. BPA is commonly found in some plastic products and can leach into the contents it comes into contact with.

Option 1, steel utensils, do not release BPA. Steel utensils are generally considered safe for food and beverage consumption as they do not contain BPA or other harmful chemicals.

Option 2, plastic coffee mugs, can release BPA. Plastic coffee mugs, especially those made from polycarbonate plastic, can contain BPA that may leach into hot beverages like coffee or tea. It is recommended to use BPA-free plastic or alternative materials like glass or stainless steel for hot beverages.

Option 3, aluminum utensils, do not release BPA. Aluminum utensils are commonly used for cooking and food storage and do not contain BPA.

Option 4, plastic water storage bottles, can release BPA. Plastic water storage bottles, especially those made from polycarbonate plastic, can contain BPA that may leach into the water. It is advised to use BPA-free plastic or alternative materials