In most cases, increasing the average molecular weight or degree of polymerization of a polymer will cause a decrease in various physical properties of that polymer. These decreasing properties include impact toughness, wear resistance, and melting temperature.
a. True
b. False

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.  

hi there if you are asking for conformation that wavelingth is the correct answer is wrong it is the answer is frequency. : )

i hope this you out, have a wonderful day