Answer asap

researchers have developed cars which slow down when they approach too close to other vehicles. aside from cost, what is most likely the main factor keeping these systems from being placed on all new cars?
a) legal obstacles
b) time constraints
c) driver confusion
d) technological issues

photosynthesis is the process plants use to convert sunlight into chemical energy. the process of photosynthesis can be modeled to illustrate the most important aspects of the natural phenomenon. through this process, plants use energy in sunlight to turn carbon dioxide gas and water into sugar. plants then use this sugar to grow. at the same time, plants produce oxygen gas as a waste product which animals breathe.
read the prompt and study the diagram. what cause and effect prediction can be used to test the assumptions in the model?
a) with more sunlight the plant will produce less oxygen
b) with more sunlight the plant will use less carbon dioxide
c) with less sunlight more sugar will be produced by the plant
d) with more sunlight more sugar will be produced by the plant

-first image goes to this question~

a product's transformation process includes all the steps in making a product from production to use and disposal or waste of a product.
when considering the design of a new building, an architect is considering using steel or wood as the material. looking at the entire life of the building, which statement would support using wood as the material for the building?
a) wood is stronger and lasts longer than steel.
b) steel is difficult to produce with current technology.
c) wood is a renewable resource while steel is non-renewable.
d) trees are an important earth resource that must be protected.