Concept:Gilt-edged securities are very low-risk bonds issued mainly by the government to raise funds.
Explanation:The word "gilt-edged" comes from the gold edge on British government bond certificates.
Because a government can collect taxes and control the supply of money, its securities are considered highly safe and stable.
These securities are commonly used to finance public projects, manage national debt, or raise revenue.
Although private organisations and multinational companies can issue bonds, such bonds are not described as gilt-edged.
Individuals and non-governmental organisations do not issue securities of this kind in the same capacity as the state.
Therefore, the main issuer of gilt-edged securities is the government.
Answer:C. Government