Read the passage given below and then answer the question given below the passage. Read carefully.

A flourishing paddy crop in 200 grow bags has turned the terrace garden of a government employee into an attraction. Krishnappa Gowda Paddambail, who works at the Government College of Teacher Education, has been cultivating 30 kg-50 kg of paddy on the roof of his home in the Maroli area for five years. The number of bags increased as his home-made bio-manure gave him bountiful harvests, free from paddy blast fungus and other diseases.

Which of the following best describes the tone of the author?