It has been projected that by 2025 people will suffer from water shortages.
a. 1 out of 3
b. 2 out of 3
c. 3 out of 3
d. 0 out of 3

The answer is option B Nowadays, water scarcity is a problem for 1.2 billion people, almost one fifth of the world's population (7 billion). According to reports from United Nations Development Programme, in 2025, this problem will reach 1.8 billion suffering total water scarcity, and two-thirds of the world's population might be living under water-stressed conditions.

The author uses the phrase 'chest puffed' to give the reader an impression of how the charachter felt, with pride and/or confidence (i may need the full extract to figure it out)