Final answer:
The correct statement among the options is A) Brownfields are sites that are abandoned, or underutilized because of perceived contamination. Options B and C are not universally true and require additional context to be considered accurate.
Step-by-step explanation:
Regarding the question: Which of the following statements are true? A) Brownfields are sites that are abandoned, or underutilized because of perceived contamination, B) Brownfields are on demand by buyers because of its cheap price, C) Brownfields are important to the city because it brings in tax revenues, D) none of the above; the correct answer is A) Brownfields are sites that are abandoned, or underutilized because of perceived contamination. This is a true statement whereas options B and C can be misleading. Brownfields may be cheaper due to the contamination risks, but they are not necessarily 'on demand' because of the costs and efforts associated with remediation. While brownfields can potentially bring tax revenues post-cleanup and redevelopment, their current state generally does not contribute significantly to tax revenue. Hence, statements B and C are not universally true without additional context.