Final answer:
The compulsory textbook for 1st-year Hogwarts students in the area of potions is 'Magical Drafts and Potions'. It's a key resource for beginner students, while 'Moste Potente Potions' is for more advanced studies.
Step-by-step explanation:
The compulsory textbook for 1st-year students at Hogwarts School of Witchcraft and Wizardry, according to the Harry Potter series, is c. Magical Drafts and Potions. This textbook is a staple for students beginning their studies in the art of potion-making, a crucial component of a wizard's education. Other books such as Moste Potente Potions are not considered compulsory for first-year students and typically contain more advanced content used in higher-level studies.