Rights issue means the issue of shares to shareholders on favourable terms.
When a company needs to raise additional capital, it may decide to issue new shares to existing shareholders, in a process known as a rights issue. In a rights issue, the company offers its existing shareholders the right to purchase new shares at a discounted price, which is typically lower than the market price of the shares. This makes it an attractive option for shareholders to purchase more shares, as they can do so at a lower cost than the current market price.
The purpose of a rights issue is to raise additional capital for the company, while also giving existing shareholders an opportunity to maintain their percentage ownership in the company, without being diluted by the issuance of new shares to outsiders. By offering shares to existing shareholders, the company is also able to maintain its relationship with its current investors, and may be able to avoid the costs and difficulties associated with finding new investors.
The other options listed in the question do not accurately describe a rights issue, as a rights issue is specifically an issue of shares to existing shareholders, and does not involve the directors or founders of the company, or the right of shareholders to vote on any issue.