Answer:
The answer is: The only transaction that increases the company's liabilities is; Purchased equipment by signing a note payable.
Explanation:
By issuing common stock, you increase the company's equity and the cash account.
If you provide services on account, you are generating revenue and creating an asset; accounts receivable.
If you collect cash from customers, you are increasing the cash account and decreasing the accounts receivable account, both are asset accounts.