Explanation:

- Section 108 of the Evidence Act deals with the situation where a person has not been heard of for seven years by those who would naturally hear of them if they were alive.

- Presumption of Death: After this period, the law presumes the person to be dead unless proved otherwise.

- Correct Answer: Option 1 - Presumption of death.

- Presumption of Life: This involves assuming a person's continuation of life unless proven dead, related more to general legal principles.

- Presumption of Legitimacy: Assumes a child born during marriage is legitimate.

- Presumption of Relationship: Involves assumptions about familial or similar relationships based on conduct.