Which group is often associated with observing dietary restrictions related to blood?

Jehovah's Witnesses are known for their strict dietary restrictions, particularly regarding blood. They believe that consuming blood in any form, whether through food or medical procedures, goes against their interpretation of biblical scriptures. This belief is rooted in their interpretation of Acts 15:29, which advises to "abstain from blood." As a result, Jehovah's Witnesses avoid foods that contain blood and refuse blood transfusions, following their faith's teachings diligently.

In contrast, Methodists, Catholics, and Baptists do not have specific dietary restrictions related to blood, making them less relevant in this context. Methodists and Baptists may have general guidelines regarding health and fasting traditions, but these do not specifically pertain to blood as a dietary concern. Catholics observe certain fasting and abstinence rules, especially during Lent, but they do not have prohibitions concerning blood consumption. Therefore, Jehovah's Witnesses stand out as the group notably associated with observing dietary restrictions relating to blood, making them the correct choice.