To develop the thesis statement "The ease and ability to make friends evolves over a person’s lifetime," the most relevant detail would be "The average person will change careers at least twice in their lifetime."
This fact implies that as people move through different stages of life and experiences, such as changing careers, their social circles and opportunities for making friends can change significantly. It highlights the evolution of friendships as people navigate different life phases, aligning with the thesis statement.
While the other options provide interesting points, they do not directly address the evolution of friendships over a lifetime as clearly as the career change statistic.