So a "thesis statement" means you want to get the main idea in one sentence. Just a simple, quick, and small summary. The thesis statement is at the beginning of a summary or essay.
You also want to engage the reader, so they don't think "this is boring," or "I think this is out of my style". It may also be called a hook, snagging the readers attention.
Change ''Ranches'' to ''ranch'' and ''gallops'' to ''gallop.''
The complete sentence would be ''Horses from the ranch gallop in the nearby fields.'' If this is is a one choice only question i'd go with changing ''Gallops'' To ''Gallop''. hope this helped
