Final answer:
The correct answer to what the solid portion of the masters of work which turns lead into gold is known as the Philosopher's Stone. It is not the Levanter, the Emerald Stone, or the Sacristy, which are unrelated concepts.
Step-by-step explanation:
The item referred to in the student's question is the Philosopher's Stone, a legendary substance that alchemists believed could convert base metals like lead into precious metals like gold, and also grant the user immortality through the Elixir of Life. This concept is deeply embedded in alchemical lore and has been an object of fascination through centuries. The correct answer to the question is b. Philosopher's Stone.
The other options provided, such as the Levanter, the Emerald Stone, and the Sacristy, do not refer to the concept central to alchemy which is the transmutation of metals. The solid portion of the masters of work which turns lead into gold is called the Philosopher's Stone. The Philosopher's Stone is a legendary substance believed by alchemists to have the power to transmute base metals into noble metals, such as turning lead into gold. It was also believed to possess the power of immortality and the ability to create an elixir of life.