Final answer:
The 'Good period' of Ivan the Terrible is the period from 1553 to 1558, reflecting a time of expansion and consolidation early in his reign.
Step-by-step explanation:
The 'Good period', or early reign, of Ivan IV, known as Ivan the Terrible, is generally considered to have been from his ascension to the throne in 1547 until around the 1560s, before the Oprichnina, his campaign of political repression. Therefore, the correct answer to which period is considered the 'Good period' of Ivan IV would be option C) 1553-1558. During this time, Ivan IV expanded the Russian Empire significantly, annexing several khanates and pushing the frontiers eastward into Siberia.