Jonathan is eight years old and is a participant in a study assessing the eating habits of school children. to assess the children's nutritional status, the research team plans to collect anthropometric data. jonathan's parents are worried because they do not understand what this means. how would you explain this data collection method to allay their fears? a) the research team is taking measurements of jonathan's height and weight to assess his growthb) the research team is asking jonathan questions about his ancestors and their originsc) the research team is using blood tests to measure standard indicators of biochemical statusd) the research team is observing and recording jonathan's normal behavior in school