A) art that has no visible subject
It should be noted that the earliest organized opposition to slavery was based on religion.
<h3>What is religion?</h3>
Religion can be regarded as the belief of individuals, and this can be attributed to what they worship.
Therefore, when people rised to oppose slavery in the land they came with religion which believe in superhuman controlling power.
Learn more about religion at;
brainly.com/question/11541955
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Scroll painting is what the name suggests it's painting on scrolls, it is not as popular as it was back then but it was used as paintings and sometimes writings or sayings.
