Answer:
Answer is Option 2: Life insurance proceeds received after the death of a spouse.
Step-by-step explanation:
Life insurance proceeds are generally not taxable. They are paid after insurer's death. It would only be taxable if the policy was given to the spouse for a price. Even if proceeds are paid under accidental policy or health insurance policy, they are not taxable. Proceeds are always paid as a lump sum amount and not in installments.
Other given options, 1, 3 and 4 like reimbursement for medical expenses, taxable portion of a disaster relief payment and dividends exceeding net premiums paid are taxable.