WHAT IS THE MAIN IDEA OF THIS PASSAGE

6, What is the main idea of this passage? a- The S.S Titanic proved itself the most seaworthy vessel in 1912. b-Attempts to rescue the S.S Titanic‘s survivors were not successful. c-Overconfidence by builders and owners was greatly responsible for the sinking of the vessel. d-A fire and panic were the only causes for the sinking of the ship. Question 4: Choose the best form of the word a, b, c or d to complete the following sentences.