Answer:
Hey!
Your answer will be IM-
This will form the word IMMATURE!
Explanation:
Some people find it tricky and make mistakes with this...such as IMATURE and so on...
HOPE THIS HELPS!
Yes that is correct, as that is when it was discovered using a weighted sound rope. It wasn't until 1960 that a submersible came down to explore the Mariana Trench.