Confucius lived during a. the shang dynasty, when rival lords vied for power. b. the zhou dynasty, when rival lords vied for power. c. the shang dynasty, which was peaceful and prosperous. d. the zhou dynasty, which was peaceful and prosperous.

I am pretty sure it is D. confucius lived during the Zhou dynasty and from what i have read the dynasty sounds pretty peaceful

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

straight or amphibians are homeothermic to thermal