Which of these scenarios is an example of natural selection? A. Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate a hot climate.
B. Dogs of the same breed having a desirable coat color are bred with one another to produce more puppies with that same color.
C. Giraffes with longer necks survive the dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.
D. People capture yellow fish from the pond and breed only the most attractive individuals. This eventually results in fancy pet goldfish.

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.