Which of the following is true of mechanisation?

The correct answer is option 1: Mechanisation refers to using gadgets which accomplish tasks.

• Mechanisation (Correct): This refers to the process of providing human or animal power with more sophisticated tools or "gadgets" to accomplish tasks, thereby increasing efficiency.

• Automation (Incorrect): Automation is distinct from mechanisation. While mechanisation reduces the amount of physical labor required, automation takes it a step further by using advanced technology (often including AI or self-regulating control systems) to perform tasks with little to no human intervention. All automation involves technology, but not all mechanisation is automated. 

NCERT: Mechanisation refers to using gadgets which accomplish tasks. Automation (without aid of human thinking during the manufacturing process) is the advanced stage of mechanisation.