What is lard, and is it kosher?

Lard is defined as the fat obtained from pigs, and it is commonly used in cooking and baking due to its ability to create flaky pastries and a rich flavor in various dishes. According to Jewish dietary laws (kashrut), pork and its by-products, including lard, are considered non-kosher and cannot be consumed by those observing these dietary restrictions. This makes the understanding of lard as pork fat crucial to determining its kosher status. Since option B correctly identifies lard as pork fat and states that it is not kosher, it is the correct answer.

The other options describe different types of animal fats, such as beef, chicken, and duck, which can have varying kosher statuses depending on how they are processed and the specific dietary laws applied. However, they do not pertain to lard specifically, making them less relevant in this context.