Answer:
a. True
Step-by-step explanation:
The macro-enviromental forces that impact an industry are: demographic, economic, political, ecological, socio-cultural, and technological.
In this case, we can see the socio-cultural macro-enviromental force at play, and perhaps also the demographic macro-enviromental force.
If consumers have become more selective and better informed about their purchases, it is most likely because they have change their culture or social status. Such a change in consumer behaviour can have great impact on an industry: it can boost some goods, while make other decline or disappear.
Such a change can also respond to demographic shift: for example, as consumers age, they tend to become more selective, so a good that used to be favored by a young population, might not be so anymore when that young population grows older.