A student is investigating temperature changes at nature preserve on a hot, clear day. Each hour, the student takes two temperatures: one over the ground, and one over the water of a lake. During this investigation, which observation is the student MOST LIKELY to make?

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

a and b sometimes have a positive value

anchor = archer //

im sorry i dont know