The correct option is
A Circular dsDNA
Bacterial plasmids are the extrachromosomal genetic element present in bacteria. They are separated from a chromosomal DNA and replicate individually. They contain circular double-stranded DNA as genetic material. Very rarely they are present in archaea and eukaryotic organisms as well. They usually carry some genes like antibiotic resistance genes which provide added advantage to the bacteria.Thus, the correct answer is 'Circular dsDNA.'