What is the single most important factor affecting the growth in steem power here?

Please, what is the most important factor that can and will affect one's growth here?
Is it

a). Number (and caliber) of followers?

b). Number of replies to you blog posts?

c). Number of actual votes on your posts?

d). Number of votes on your replies?

e). Just plain old great influence.

Please choose your answer and do explain why in the comments (replies) section.

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