Final answer:
The correct answer for the document evidencing the ownership of rights to acquire more stock of a corporation is b) Stock warrants, which are issued to investors and grant them the right to purchase stock at a specific price before a certain date.
Step-by-step explanation:
Among the various financial instruments a corporation can issue, the one provided to shareholders as proof of the ownership of rights to acquire more of its unissued or treasury stock is the stock warrant. A stock warrant is somewhat similar to a stock option, but there are key differences, including the time frame for use and entities that issue them. Stock options are typically issued to employees, whereas stock warrants are issued to investors. When a corporation wants to raise capital without immediately diluting the value of existing shares, it might issue stock warrants. These securities give the holders the right, but not the obligation, to buy a certain number of shares of stock at a predetermined price, before the expiry date.
On the other hand, stock dividends involve the distribution of additional shares to shareholders instead of cash and are a sign of the company's profitability. Finally, stock subscriptions are agreements between the company and the investors, where the investors agree to buy a new issue of stocks at a future date at an agreed-upon price, which is different from a warrant which gives the right but does not obligate buying. Hence, for the question posed, the correct answer is b) Stock warrants.