Kayla has experienced a decrease in the need for sleep for the past three nights, is extremely talkative and creative, and has been very irresponsible with money during this time. Kayla is in the midst of a(n) .

the telephone is the answer

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.