क्रियात्मक अनुसंधान का सबसे अच्छा उदाहरण है:

उत्तर: (C) A teacher testing a new method to improve reading skills of weak students in their class — Action research is classroom-specific: "My students struggle with fractions — let me try using manipulatives for 4 weeks and measure if their scores improve." It's practical, local, and teacher-initia...