Explanation:

Sure, let’s break this down:

- The Contract Labour (Regulation and Abolition) Act, 1970 is all about regulating the employment of contract labour and improving their conditions.

- Here’s what the options really mean:

- Social Security Act: Laws that give workers things like pensions or healthcare. This Act doesn’t provide those.

- Industrial Relations Act: These keep the peace between employers and employees—stuff like strikes, lockouts, and negotiations. That’s not the main focus here.

- Welfare Act: This is about looking out for worker well-being—health, safety, working conditions. That’s exactly what this Act is about.

- Commercial Act: Think business deals and trade, not worker protection.

- So, the Contract Labour Act puts welfare first—it’s about making sure people working on contract aren’t exploited, and that their workplaces are safe and fair.