Which of the following statements is true regarding options trading?

The statement that options trades settle on the next business day is accurate. In the realm of financial markets, options trades typically have a settlement process that occurs one business day after the trade date. This means that if a trade is executed on a particular day, the transaction will be finalized and settled the following business day. This standard practice aligns with most equity and options trading, ensuring a consistent processing timeline.

In contrast, the other statements do not hold true in the context of options trading. For instance, not all options trade on the third business day, and trading can happen on various schedules depending on factors like type and expiration. Regarding position limits, regulatory bodies do impose limits on the number of contracts a trader can hold to maintain market integrity. Lastly, while options must be registered with appropriate regulatory authorities, they are not subject to registration in the sense that every single option must go through a registration process like securities. Therefore, the claim regarding the settlement of options trades is the most accurate representation of options trading dynamics.