Which is a suitable thesis sentence for a five-page research paper?

The history of aviation had a rocky start but then was set for smooth sailing from there on.
Putting on sun block is a tricky experience.
Abraham Lincoln's early years affected his presidency.
The migratory paths of whales are relevant to the average American citizen.

Question

Which is a suitable thesis sentence for a five-page research paper?



The history of aviation had a rocky start but then was set for smooth sailing from there on.
Putting on sun block is a tricky experience.
Abraham Lincoln's early years affected his presidency.
The migratory paths of whales are relevant to the average American citizen.

rose21 · Answer

The history of aviation had a rocky start but then was set for smooth sailing from there on.