Which trna anticodon(s) could decode the mrna codon cag (recall that codons are always written in the 5'—> 3' direction and anticodons are written in the 3'—> 5' direction)?

GUU or GUC can decode the mrna codon cag (recall that codons are always written in the 5'—>3' direction and anticodons are written in the 3'—>5' direction).
Codon is located on the mRNA molecule and anti-codon is located on the tRNA molecule. Codon is actually a sequence of three nucleotides, which specifies one amino acid in the chain of polypeptide.

The answer would be a. aluminum can

They are all in a iving organism.