Question 3 What is an "unspoken sadness" for Malala and her mother?
the fact that her mother struggles to read the prices in the bazaar
the fact that her mother does not love her father
o the fact that she is banned from laughing
the fact that her mother is ill

the fact that her mother struggles to read the prices in the bazaar

Explanation:

The thing that Malala always cared for was rights to education for women. It is known that her mother did not receive full education. "Unspoken sadness" would also make it not be something directly related to emotions, like laughing. Therefore, we must pick, "the fact that her mother struggles to read the prices in the bazaar".

op: object of preposition