I think that it would still just be an island. A peninsula is a landform surrounded by water that extends outward from the land. Imagine a green rectangle sticking out from the green oval you pictured. That rectangle would represent the peninsula. Therefore, dividing the island in half would not create any peninsulas. Hope this helps :)
For this item, the most probable answer is letter A. One of the most important reason why Earth is a livable place is its proper distance from the Sun which gives adequate temperature and amount of radiation. Other factors are the gravity, atmosphere, and water.
They use it to date rocks that are old and find the age. its not always accurate but close enough
Two flat surfaces intersect to form a line