which of the following is the only animal category that contains significant amounts of carbohydrate

Out of the typical animal categories, the only one that contains significant amounts of carbohydrates is dairy.

Dairy products like milk, yogurt, and kefir contain lactose, a type of sugar specific to milk. This sugar provides a source of carbohydrates for young mammals before they transition to a solid diet. While the exact amount of lactose varies, milk can have around 5% lactose by weight, which translates to a significant amount of carbohydrates compared to other animal products like meat, poultry, or fish.