Which detail implies that Kamkwamba has the traits of a hero? I began a rigorous course in independent study. I planted a thick blue gum pole deep in the ground. I made my own hammock out of knotted maize sacks. I met him after school and he told what they'd done in school.

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At home I planted a thick blue gum pole deep in the ground near the mango tree out front, then made my own hammock out of knotted maize sacks. For the next three weeks, I began a rigorous course in independent study, visiting the library in the mornings, and spending the afternoons reading in the shade.

Gilbert offered to help right away. Each day I met him after school and he told me what they'd done in school.

—The Boy Who Harnessed the Wind,

William Kamkwamba

I began a rigorous course in independent study.

Explanation:

The line "I began a rigorous course in independent study" shows that Kamkwamba is very dedicated and committed to helping his community and that is why he started to study intensively. In other words, Kamkwamba strives to do good, which is the main feature of a real hero.

the right answer is a