The true statement about DNA among the options provided is:
C) all animals have DNA.
To clarify the other statements:
A) "DNS is 2 simialr 2 use 4 grouping organisms" - This statement is unclear and appears to be a typographical error.
B) "Proteins signal da cells 2 make DNA" - This is not accurate; while proteins play a role in various cellular processes, DNA is not made from proteins; rather, DNA is used to encode the instructions for making proteins.
D) "DNA is a protein" - This is false; DNA (deoxyribonucleic acid) is a nucleic acid, not a protein.
So, C is the correct answer.