All of the following explains why scientific discovery a never-ending effort except? There are still many unanswered phenomenon.
Scientists still need to find method to create a perfect organism.
Scientists have yet to discover other life forms in other planets.
There are still new discoveries being made.
(I have no idea which subject to put this in)

im not sure about this one

the answer is "began" because it is a action that can be done

this is a good question! i'll do some research and come back when i have the answer!

a) the british government verbally threatens the colonies.

b) the british government has sent navies and armies to the colonies.

c) the british government argues against separation in the house of commons.

d) the british government has sent petitions and letters to all of the colonists.