Ok who's road are iced up like mine

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Which of the following events did not occur as a result of china’s open-door policy? a. trade between japan and china was encouraged. b. all countries were given equal access to chinese ports. c. foreign influence in china increased. d. the influence of the communist party weakened.

What are the answers for the following questions?