Explanation:

- The statement defines a term related to the Apprentices Act, 1961. It is about specifying a particular trade or occupation in engineering, technology, or vocational fields.

- Option 1: Designated trade

- This option refers to trades that are officially specified by the Central Government, in agreement with the Central Apprenticeship Council, as per the Act.

- This aligns perfectly with the statement as it mentions the official process of notification.

- Option 2: Apprenticeship training

- This involves the system of training individuals in specific trades, which is broader and not the exact term described in the statement.

- It does not specifically involve the notification by the Central Government as per the statement.

- Option 3: Both (A) & (B)

- This implies both options are valid, but only "Designated trade" captures the essence of the provided statement accurately.

- Option 4: None of the above

- This is incorrect because "Designated trade" is a direct match for the term in the statement.

Correct Answer: Option 1: Designated trade