Final answer:
A thesis is a clear, central point that identifies the main argument, indicates the main ideas, and is supported by synthesized evidence from relevant sources.
Step-by-step explanation:
Vaccaro's thesis, although not provided in the information, can be deduced as a central point that makes a claim, is supported by evidence, and is connected to the main ideas presented in the essay. From the given references, we can understand that a thesis must be a clear, declarative statement that not only presents the main argument but also offers a road map of the points that will be expanded upon in the body of the work. It should be supported by details, examples, quotations, paraphrases, and summaries from relevant sources, synthesized to show the interconnections between the ideas being presented.
An example thesis following these guidelines might be: 'Desmond's advocacy for the voucher system is rooted in its potential to empower parents and improve educational outcomes, which, supported by both empirical evidence and theoretical arguments, invites a critical examination of the current educational provisions.' This fictional thesis conveys a clear stance, hints at the evidence to be used, and connects Desmond's belief in the efficacy of the voucher system to a broader discussion on education.