Final answer:
Leonardo da Vinci's anatomical studies, including those of a foetus, were self-initiated and not commissioned by any external entity. He studied anatomy through the dissection of stolen corpses, driven by his curiosity.
Step-by-step explanation:
Leonardo da Vinci's sketched studies of a foetus in the womb, which date back to around 1510-13, were not commissioned by any church or government. Leonardo pursued his anatomical studies out of personal interest and insatiable curiosity about human anatomy, often working in secrecy due to the prohibitions against dissection at that time. His work on human anatomy was derived from the dissection of stolen corpses since dissections were generally frowned upon by the society and church of his time.
The sketched studies of a foetus in the womb by Leonardo da Vinci were not commissioned by any of the options listed in the question. Leonardo da Vinci was known for his insatiable curiosity and interest in anatomy. He conducted his own dissections of corpses, and his drawings of the human body, including the foetus in the womb, were part of his scientific observations and studies.