How did sitting bull get his name

because he sat around all the time. Jk. Originally he wasn't always name the sitting bull. he was originally named "jumping badger" but because he acted like a bull and there personalities, slow and quiet, he gained the name the sitting bull. HOPE THIS HELPS!

Explanation:

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

the answer is d.index