Explanation:

- Section 20: This part of the Limitation Act deals with the effect of acknowledgment in writing or payment on account of debt. It’s not about setting or providing the actual period of limitation itself.

- Section 41: Now, this section is about the limitation for suits under certain types of trust property, which isn’t a general rule about limitation periods.

- Section 44A: Here’s the thing—this section talks about the execution of decrees passed by courts in reciprocating territories, not about setting the standard period of limitation.

- Section 24: This one is about the computation of time mentioned in instruments. Again, it doesn’t directly provide the period of limitation for suits or applications.

So, to be clear, the actual period of limitation is generally provided in The Limitation Act as a schedule, not specifically under any of these sections. The correct answer isn’t any of the options listed.