The warren court ruled that official prayer in public schools is unconstitutional because it violates the right to criticize the government. the clause prohibiting the establishment of a religion. a right not explicitly named in the constitution. the right of students to assemble peacefully.

I believe the answer is: the clause prohibiting the establishment of a religion.

Due to the separation of church and state,  public infrastructure is banned from being used as a religious instrument. Public schools are considered to be public infrastructure. Forcing all students to do official prayer, might violate the right of some students who held different religion than the majority.

its B

Explanation:

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.