The statement that best explains the motivations for creating the East India Company (EIC) is:
d. Mercantilist policies saw economic strength and the strength and protection of trade as key to national security.
The EIC was established in the context of mercantilist economic policies that emphasized the importance of trade and colonial expansion for national wealth and security. The other statements provide some context but do not capture the overarching economic motivations driving the formation of the company.