Which product is marketed specifically to children?

Freddo is marketed specifically to children, making it the correct answer. This brand of chocolate is designed to appeal to a younger demographic, featuring child-friendly packaging, themes, and marketing campaigns. Freddo has established itself in the marketplace as a fun and playful treat, often associated with children's snacks. The character of Freddo the frog adds to its appeal, making it memorable and engaging for children.

In contrast, the other products, such as Nivea for Men, are clearly targeted towards adults, specifically men looking for grooming products. Fulfil Protein Bars cater mostly to health-conscious adults or those engaged in fitness, while Walkers, although they do have some child-oriented snacks, primarily focus on a broader audience of all ages and are not specifically marketed only to children.