Final Answer:
The answer of the given statement that "the following occur in the primary market" is c. New securities are placed for sale.
Step-by-step explanation:
The primary market is where new securities, such as stocks and bonds, are issued and first offered for sale to the public. This is the market where companies raise capital by selling their securities directly to investors. The options a, b, and d do not accurately describe activities in the primary market.
Option a is incorrect because the primary market doesn't necessarily involve trading on exchanges; instead, it focuses on the initial issuance of securities. Option b is incorrect because the primary market involves various types of securities, not just stocks. Option d is incorrect because the cost structure in the primary market can vary and is not necessarily the lowest.
In summary, the correct statement is that c. new securities are placed for sale in the primary market, making it the initial point of issuance for securities.