(i) Arun and Aparna are here. (ii) Arun and Aparna is here. (iii) Arun's families is here. (iv) Arun's family is here. Which of the above sentences are grammati...

The fishermen, _______ the flood victims owed their lives, were rewarded by the government.

Select the appropriate option in place of underlined part of the sentence.Increased productivity necessary reflects greater efforts made by the employees.