I need help please look at the pic

Indian architects worked with construction techniques? a. concrete b. skeleton c. stone and wood d. post-and-lintel only answer if you are 100% positive your answer is correct! 10 points!

In areas where even the experts disagree; everyone has a right to his own opinion. i mean if answers aren’t given just like in lots of things; then it has to be just anyone’s opinion. is this dualism multiplicity relativism or commitment

Gus needs to purée his soup while it's still in the pot. what is the best tool for him to use?