Cabinet members are not responsible for passing laws; that is the job of the legislative branch (for example, Congress in the United States).
Correct responsibility
From the list you gave, the main correct responsibility to choose is “making policies.”
Cabinet members lead executive departments, help shape and implement government policy, and advise the head of government or president on policy decisions.
About proposing bills
Cabinet members can help draft or recommend legislation within the executive branch, but formally introducing or “proposing” bills in the legislature is done by legislators, not cabinet members.
Any role they play with bills is usually indirect, through advising, drafting, and advocating for the administration’s legislative agenda.
About giving speeches
Cabinet members often give speeches to explain and promote government policies and their department’s work.
However, giving speeches is more of a communication duty than a core constitutional or primary responsibility.
Summary of choices
- Passing laws – No; this belongs to the legislative branch.
- Making policies – Yes; this is a central cabinet function.
- Proposing bills – Not as a formal legislative power; mainly indirect.
- Giving speeches – Common activity, but not the main responsibility.
So, the best single answer is: making policies.