Final answer:
Heraclitus' metaphysics emphasizes both patterned change and balanced opposition, where change is constant and governed by a universal principle, but also structured through balanced counterparts.
Step-by-step explanation:
In Heraclitus' metaphysics, the notion that is emphasized is both patterned change and balanced opposition. Heraclitus' metaphysics emphasizes both patterned change and balanced opposition, where change is constant and governed by a universal principle, but also structured through balanced counterparts.
Heraclitus is well-known for his philosophy that emphasizes the constant flux and change within the universe, stating that one cannot step into the same river twice because it is always changing.
This change, however, is not random or chaotic; it follows a pattern or logos, which refers to the universal principle of reason that imposes order and structure.
At the same time, Heraclitus posits that there is a balanced opposition in the universe, meaning that for everything there is a counterpart and that this balance is essential for the universe's continual process of change and becoming. Therefore, the correct answer is d) Both a) and b).