Answer: option B) Statement is false
Explanation:
Living things are NOT composed only of organic elements. Organic elements refers to compounds of Carbon, whereas living things such as Vertebrates (man, shark, lion etc) possess bones, teeth with INORGANIC components like phosphorus, magnesium, calcium.
Also, nonliving things are NOT made up of only inorganic elements. A good example is the air we breathe, it is non-living, yet contains carbon in the form of Carbiondioxide.
The creative use of science to solve problems.
I do believe that it is C. crossing over :) I hope that is correct, it seems like the only plausible answer.