Why do people call DNA the genetic code and how does it work?

The genetic code is (nearly) universal

Even in organisms that don't use the "standard" code, the differences are relatively small, such as a change in the amino acid encoded by a particular codon. A genetic code shared by diverse organisms provides important evidence for the common origin of life on Earth.

Explanation:

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.