Final answer:
Jan Hus is known for his criticism of establishing a middle ground between Catholics and Protestants.
Step-by-step explanation:
Jan Hus is known for his criticism of: D.) Establish a middle ground between Catholics and Protestants.
Jan Hus was a Czech religious reformer who preceded Martin Luther and played an important role in the Protestant Reformation. He criticized the Roman Catholic Church for its corruption and advocated for reforms, but he did not reject the humanism movement, conceal corruption in the Catholic and Protestant churches, or pay church indulgences to reduce his time in purgatory.