According to legend, seeing a mermaid while sailing meant what?

Here is the question :

ACCORDING TO LEGEND, SEEING A MERMAID WHILE SAILING MEANT WHAT?

Here is the option for the question :

• A bountiful treasure hunt
• Fair winds and following seas
• An omen of a shipwreck
• A guardian angel was watching

The Answer:

And, the answer for the the question is :

Explanation:

[STC0011884]. Many different cultures have legends about mermaids, and in almost every case, the mermaids in question are portrayed as dangerous, especially to sailors. Many superstitious sailors put the blame for stormy seas on sightings of mermaids, and early mapmakers like the Swedish cartographer Olaus Magnus depicted areas of severe weather or frequent shipwrecks with sea monsters and mermaids.