Question

how is the internet of things (iot) changing manufacturing?
manufacturers can make better predictions about sales.
products contain systems that let them talk to each other.
manufacturers need fewer workers with degrees in science.
manufacturers can outsource work more effectively.

Explanation:

The Internet of Things (IoT) in manufacturing involves devices and products being connected and communicating. Option 2 aligns with the core concept of IoT where products (as devices in a network) can interact. Option 1 is more about data analytics (not specific to IoT's device - to - device communication aspect). Option 3 is not a direct change due to IoT (IoT may require different skills but not necessarily fewer science - degree workers). Option 4 is about outsourcing (not directly related to IoT's device - interaction feature).

Answer:

Products contain systems that let them talk to each other.