Final answer:
In English, the correct preposition to use in the sentence: 'He divided his property ___ two sons' is 'between', because it is referring specifically to two persons, the two sons.
Step-by-step explanation:
The correct preposition to fill in the blank in your English sentence: 'He divided his property ___ two sons' is 'between'. The word 'between' is typically used when referring specifically to two objects or persons. So, your sentence should read: 'He divided his property between two sons'. On the other hand, 'among' is used when referring to three or more objects or persons. 'In' and 'to' would be grammatically incorrect in this sentence.
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