Answer:
3
Explanation:
It was significant because it helped Spain gain control over a colony in the America's, which later came to be the colony of New Spain.
B. His mass would increase due to gravity on Earth.
Any practices should best be based on a research - this is the correct answer. (a. child development and research) Research is the best source of actual knowledge, rather than people's best guesses (people's best guesses might lead government regulations, but it would be better if they also followed research results.).
One of the ways to assess whether or not a learning game is effective is B. doing a quiz before and after the game to see what you have learned.
The point of a learning game is of course to learn something, so giving your students a quiz before and after the game will show how much they have progressed.