M2 is a measure of the money supply that includes all elements of M1 (which is cash and easily accessible funds) plus certain near-money assets. Specifically, M2 consists of:
- Easily accessible funds (M1)
- Savings accounts
- Money market accounts
- Small time deposits (like certificates of deposit under $100,000)
Therefore, the best description from your options would be:
easily accessible funds, money market accounts, and savings instruments.