Final answer:
The true statement about Plato's world of Forms is that abstract concepts are at the highest level, representing perfect and eternal essences, beyond the material world.
Step-by-step explanation:
According to Plato, the correct statement about the world of Forms is D) Abstract concepts are at the highest level in the world of Forms.
Plato's theory of Forms posits that there is an invisible, immaterial realm where the perfect, eternal, and immutable essences of things reside. This realm of Forms is fundamentally different from the changing, material world experienced through the senses. The Forms represent the true essence of all things, and particulars in the material world are merely imperfect representations of these Forms.
In the Platonic view, the world of Forms is not something that can be seen or touched; it is not material but rather a transcendental reality. By contemplating the Forms, especially those representing virtues like wisdom and justice, individuals can achieve true knowledge. Thus, Plato sets the abstract concepts such as beauty, justice, and goodness above all else, indicating their supreme position in his metaphysical hierarchy.