Which statement about planning is true?
a) adult-controlled activities children engage in advance planning.
b) planning on multistep tasks declines over the school years.
c) the demands of school tasks contribute to declines in school-age children s planning.
d) children learn much about planning from collaborating with more expert planners.

At what age must a person begin receiving their roth 401(k) payments?

Why was florance consterd the heart of the renassinance

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.