Final answer:
The properly stated thesis statement is option b) "The impact of climate change on global biodiversity is a critical issue that requires urgent attention." A successful thesis is clear, specific, and debatable, guiding the essay's content and direction.
Step-by-step explanation:
The properly stated thesis statement among the given options is b) "The impact of climate change on global biodiversity is a critical issue that requires urgent attention." This statement is clear, specific, and states a position that can be supported with evidence. It highlights a critical issue and implies that the subsequent content will provide insight into the urgency of this problem and potential solutions.
A good thesis statement should do the following: be engaging to pique the reader's interest, be precise and specific to indicate the focus of the essay, be manageable in scope, and clearly state the writer's position on the topic. For example, in refining a thesis on climate change, narrowing the topic to discuss specific effects or solutions related to a particular aspect, such as the reduction of carbon emissions in urban areas, can make it more manageable. Organizing your ideas around this thesis helps to maintain focus and coherence throughout the essay.
Additionally, the thesis statement is not just a topic or a fact; it is a claim or position that reflects the writer's stance on a debatable issue. A well-structured thesis guides the reader through the argument and provides a roadmap for the essay.