Nine-year-old Ricky has recently learned how to solve long division problems, and he still struggles with especially difficult problems. At his mother's request, Ricky helps his eight-year-old sister Lucy with the simple long division problems she must do for her math homework. Which one of the following is most likely to result? a. Ricky's own long division skills will improve because he is more motivated. b. Ricky will gain nothing from helping his sister because doing long division is outside his zone of proximal development. c. Ricky's own long division skills will decrease, because any mistakes that Lucy makes will "corrupt" his own mathematical thinking. d. By helping Lucy with her long division problems, Ricky will be able to practice using the central conceptual structure that underlies his mathematical thinking.

Which perminant civil rights leader would have disagreed most with washington's approach to solving the problem of racial inequality in the south?

In at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution. (10 points)

Aresearcher conducting behavioral research collects individually identifiable sensitive information about illicit drug use and other illegal behaviors by surveying college students. the data are stored on a laptop computer without encryption, and the laptop computer is stolen from the researcher’s car on the way home from work. this is an unanticipated problem that must be reported because the incident was (a) unexpected (i.e., the researchers did not anticipate the theft); (b) related to participation in the research; and (c) placed the subjects at a greater risk of psychological and social harm from the breach in confidentiality of the study data than was previously known or recognized. according to ohrp, this unanticipated problem must be reported to the irb in which timeframe? promptlywithin 48 hourswithin 24 hourswithin two weeks