Choose the best option to fill in the blank with the correct phrase g…

The correct answer is Option (4) → for the sake of

Complete sentence: Anokhi worked tirelessly for the sake of her children's future, ensuring they had every opportunity. Anokhi worked hard so that her children would have a good future, so she worked "for the sake of her children's future".

Option	Used to show	Example
(1) on behalf of	as the representative of someone, in their place. One cannot act as the representative of a future.	The principal accepted the award on behalf of the school.
(2) by way of	through a place or as a form of something. It does not show for whose good the work was done.	We travelled to Shimla by way of Chandigarh.
(3) in case of	if something happens. It is used for emergencies or conditions.	In case of fire, use the stairs.
(4) for the sake of (answer)	For the sake of means for the good or benefit of someone or something.	He gave up smoking for the sake of his health.