Synthesize technology-extension sources for a Paper 3 claim

Psychology HL Paper 3 source booklet: The HL extension is technology within human development. Source A graph reports active-play choice rate for poster reminder (50) and wearable movement prompt (73) from 54 participants using recess observation tallies across two prompt weeks. Source B reports the qualitative theme "students said the prompt worked when it felt like a private reminder rather than public pressure" from 11 participants using student paired interviews. Source C says wearable logs show more step-count increases after private prompts. The claim is: "private wearable prompts can support active choices in early adolescence." Paper 3 Question 4 asks students to interpret at least three sources and judge how far the stated claim is valid. Select the HL extension focus, source issue, data conclusion, and synthesis limit. Then answer this in your own words: what should the student write next to make this Psychology HL Paper 3 response stronger for the exact sources? AI will analyse your source interpretation, data reasoning, extension knowledge, research-method judgement, synthesis, and expression.