Which of the following is an example of an effective thesis statement for an informational essay?

a Did you know that preserving historic buildings is good for society and the planet?
b It is important to preserve historic buildings for a lot of reasons that I will share with you in this essay.
c Preserving historic buildings connects modern society to the past, provides education to future architects and tourists alike, and is an environmentally conscious choice.
d Some ugly new buildings went up in my neighborhood and really great old buildings were destroyed in the process.

c Preserving historic buildings connects modern society to the past, provides education to future architects and tourists alike, and is an environmentally conscious choice.