The sequence is
DNA --> RNA --> Amino Acid
For example
GGC is your DNA
CCG is your RNA
And your amino acid would be PRO
2.
AAT --> AAU -->ASN
DNA ---> RNA --> AMINO ACID
3.
TCA --> UGA --> STOP
DNA --> RNA ---> AMINO ACID
The correct answer is C. humans
Language is an advanced system for communication available only to humans. Dolphins, chimps, and bees, use other means to communicate, but it is not a language, it's mostly things like smells or pheromones or similar things.