What are the two types of long-term memory?
A sensory and short-term
B. iconic and echoic
C. explicit and implicit
D. recency and primacy

answer is c explicit and implicit

a photo collage of women at work during world war 2

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.