Final answer:
The safest option for Tomas to offer the baby if he wants to minimize any potential problems with food allergies is cereal made with rice and water. Rice is a hypoallergenic food and is generally well-tolerated by infants without causing allergic reactions.
Step-by-step explanation:
The safest option for Tomas to offer the baby if he wants to minimize any potential problems with food allergies is cereal made with rice and water. Rice is a hypoallergenic food and is considered to be one of the least allergenic foods. It is generally well-tolerated by infants and rarely causes any allergic reactions.
Unlike the other options listed, such as shrimp, eggs, mushrooms, and peanut butter, rice is less likely to trigger an allergic response in babies.