To solve this problem, we need to determine the nature of the DNA present in chloroplasts.$\newline$Chloroplasts are organelles found in plant cells and some algae, responsible for photosynthesis.$\newline$They contain their own genetic material, which is similar to that found in prokaryotes.$\newline$Let's analyze the characteristics of chloroplast DNA:$\newline \bullet$Chloroplast DNA is circular, similar to bacterial DNA.$\newline \bullet$It is double stranded, which is typical for most DNA molecules.$\newline$Therefore, the DNA present in chloroplasts is circular and double stranded.$\newline$This corresponds to Option 4: Circular, double stranded.