For a research study that compares problem solving ability for participants with three different levels of self-esteem (high self-esteem, medium self-esteem, and low self-esteem), what kind of design would be appropriate?

Two police officers stopped a car for a minor traffic violation. while one of the officers dealt with the driver and the traffic violation, the other officer talked with the passenger. seeking to question the passenger about gang involvement, but lacking reasonable suspicions of criminal activity, the officer ordered the passenger out of the car. as the passenger exited the car, the officer saw a bulge in the passenger's coat which the officer suspected might be a gun. upon patting down the passenger, the officer felt the handle of a revolver and removed the gun. the passenger, who was a convicted felon, was charged with the possession of a gun by a prohibited possessor. prior to trial, the defendant sought to suppress the gun as evidence, contending that its seizure was unconstitutional. should the court suppress the gun as evidence? ayes, because, since the car had been stopped for a traffic violation, the officer could not order the passenger, who had not committed the violation, to exit the car. byes, because, since the officer lacked reasonable suspicion that the passenger was engaged in criminal activity, the officer could not pat down the passenger. cno, because a valid traffic stop gives an officer the right to pat down a passenger. dno, because the gun was discovered as a consequence of a valid terry stop and frisk.

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

When the communist, under mao, took control of china in 1949 they announced total support support for which country and its ideology?