When blood glucose levels are difficult to control in Type II diabetes, some forms of insulin may be added to the treatment regimen to control blood glucose and limit complication risks. Which of the following statements is accurate based on research?A. Premixed insulin analogues are better at lowering HbA1C and have less risk for hypoglycemia. B. Premixed insulin analogues and the newer premixed insulins are associated with more weight gain than the oral antidiabetic agents. C. Newer premixed insulins are better at lowering HbA1C and post-prandial glucose levels than are long-acting insulins. D. Patients who are not controlled on oral agents and have post-prandial hyperglycemia can have NPH insulin added at bedtime.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.