What are the best answer for this question

Solution:-

The correct answer is option (b): As Lebanese people, this country is ours, and we have to stand together to solve all its problems.

(
Option a is wrong. It's means it is. So, it is an incorrect sentence. The correct possessive form is its not it's.

Option c is wrong. It should our's country. As 'our's' shows possession. 'Ours' is simply plural form of our.

Option d is wrong. 'his problems' is wrong. A gender neutral pronoun like it should be used for country.
)