Fill in the gap : Early sailing ships, --in uncharted seas, at times faced many ----in reaching their destination.
A
were navigated ---problems
B
navigation ---hazards
C
has navigated --adversities
D
being navigated--perils
Correct Answer: navigation ---hazards
Ships are navigated (চালিত), And they faced hazards (বিপত্তি, ঝুঁকি) right use of the verb here is ‘navigating’.