1.A. I’m going to write about Darwin’s concerns with evolution in The Origin of the Species.
This is the weak thesis statement because this thesis makes no claim. All it says it that you are going to write about a book big deal. It should go into more detail so that an argument can be made.
2.A. An important part of one’s college education is learning to better understand others’ points of view.
This is the weak thesis statement because to me it seems like it is more common sense. Obviously you could argue about this, but it would be a waste of time.
3.A. The jeans industry targets its advertisements to appeal to young adults.
This is the weaker of the two thesis statements because it is to broad and general. In order for these companies to make money they need to target everyone not just a specific group.
4.A. Othello is a play about love and jealousy.
Example A is the weak thesis statement because you don’t have to watch the play to figure out what it is about. It should go into a little more detail of the actual plot so that it will suck the reader in and make them want to see the play.
5.A. The songs of the punk rock group Minor Threat relate to the Feelings of individuals who dare to be different. Their songs are just composed of pure emotion. Pure emotion is very important in music, because it serves as a vehicle to convey the important message of individuality. Minor Threat’s songs are meaningful to me because I can identify with them.
The thesis statement above is the weakest out of the two options because it does not stay on topic very well. It should be written in a better method than the one that was chosen.

more on how to write a thesis statement
http://owl.english.purdue.edu/owl/resource/545/01/