A researcher observes two behavior categories in an athletic competition: avoidance and persistence. To manage the observation period, the researcher observes each behavior category in alternating time intervals during the athletic competition. Which method was used to manage the observation period?

Base your answer for this question on the statement below and on your knowledge of social studies.my fellow citizens, events in iraq have now reached the final days of decision. for more than a decade, the united states and other nations have pursued patient and honorable efforts to disarm the iraqi regime without war. that regime pledged to reveal and destroy all its weapons of mass destruction as a condition for ending the persian gulf war in 1991.…— president george w. bush, march 17, 200344 which action did president george w. bush take following this statement?