To solve this problem, we need to match the organisms in List I with their corresponding common names in List II.$\newline$Let's analyze each pair:$\newline$A. Pterophyllum:$\newline$• Commonly known as the Angel fish.$\newline$B. Myxine:$\newline$• Commonly known as the Hag fish.$\newline$C. Pristis:$\newline$• Commonly known as the Saw fish.$\newline$D. Exocoetus:$\newline$• Commonly known as the Flying fish.$\newline$Now, let's match each organism with its corresponding common name:$\newline$A matches with III (Angel fish),$\newline$B matches with I (Hag fish),$\newline$C matches with II (Saw fish),$\newline$D matches with IV (Flying fish).$\newline$Therefore, the correct option is:$\newline$Option 4: A->III, B->I, C->II, D->IV.