<prompt> Mental ability to make valid will isVicarious liabilityCurrens rule is basis for thisTestamentary capacityMcNaughtens rule  <response>: C i.e. Testamentary capacity Testamentary capacity capacity is the mental ability oof a person to make a valid willQ Sec 31 IPC Holograph Will Will written by a testator in own hand writing Mc Naughten Durhams Currens - Rule Rules for criminal responsibility of insaneQ Vicarious Responsibility A master is responsible for negligent acts of his servantsQ not where servant is independent to take decisions Euthansia Mercy killingQ Galton system Finger print study DactylographyQ Gustafsons Boyde - Method Age estimation by means of teethdeg. Beillion system Anthropometry Identification of an adult 21 years on basis of body measurements, marks descriptive data.Q 