Correct option is A
Thematic approach
When a teacher of class VI asks her learners to find words related to food and later display these words on chart papers on the wall, this strategy is known as the thematic approach. This method involves focusing on a specific theme or topic (in this case, food) and exploring related vocabulary and concepts. It helps students to make connections between words and ideas within a particular context, enhancing their understanding and retention of the subject matter.