Final answer:
In this question, T devises property 'to my grandchildren who reach 21.' This means that the property will only be given to the grandchildren who reach the age of 21.
Step-by-step explanation:
In this question, the subject is Law. T devises property 'to my grandchildren who reach 21.' T leaves 2 children and 3 grandchildren under 21. This means that the property will only be given to the grandchildren who reach the age of 21. The children and grandchildren who are under 21 at the time of T's passing will not inherit the property.