Answer:
The quote by Marshall McLuhan, "We don't know who discovered water, but we are pretty sure it wasn't a fish," illustrates the social constructionist idea that:
All of the above
This quote can be interpreted in various ways to support all the options listed:
It suggests that individuals are always immersed in multiple and competing discourses, as the fish (representing individuals) are surrounded by water (representing discourses).
It implies that individuals may not recognize the ways they are being shaped by social and cultural discourses, similar to how fish may not be aware of water shaping their environment.
It indicates that individuals may not see what they already take to be true, paralleling the idea that fish may not perceive water as something noteworthy or distinct.
