Explanation:

- Option 1: Highly specialised

- This is the correct answer. In industrial societies, labour is divided into numerous specific tasks. People often perform very narrowly defined functions, leading to high specialisation.

- Option 2: Specialized

- While this is partly true, "specialized" alone does not capture the intensity of specialisation in industrial societies as accurately as "highly specialized."

- Option 3: Moderately specialised

- This option underestimates the extent of division of labour in industrial contexts. Industrial work is more than just moderate in its specialisation.

- Option 4: Not specialised

- This describes pre-industrial societies better, where workers often performed multiple tasks, not so in industrial societies.

Correct Answer is:

Option 1: Highly specialised