Answer: Investment banks.

**Explanation:** - **Option A (Investment banks)** is correct because investment banks specialize in advising corporate clients and facilitating transactions, including seasoned securities offerings. A seasoned offering refers to the sale of additional units of a security that has already been issued by the issuer, also known as a secondary offering. - **Option B (Commercial banks)** is incorrect. Commercial banks are depository institutions that primarily accept deposits and provide loans, along with transactional services like check writing. They do not typically engage in arranging securities offerings. - **Option C (Multilateral trading facilities)** is incorrect. MTFs are trading venues that operate similarly to exchanges but lack regulatory authority over subscribers beyond their trading conduct within the system. They do not assist in securities offerings.

Author: LeetQuiz Editorial Team