With regard to air quality, which of the following is a true statement?

Question

Quizplus · Accepted Answer

A. It is common for major metropolitan areas to struggle with air quality due to higher traffic volumes, industrial activities, and other pollution sources. Cities like Houston, Dallas-Fort Worth, Beaumont, and El Paso have historically faced challenges in meeting federal clean air standards, particularly for pollutants such as ozone and particulate matter.
B. It is also plausible that other metropolitan regions could be close to non-attainment status, which means they are on the verge of not meeting federal air quality standards. This can happen due to a variety of factors, including increased vehicle emissions, industrial growth, or geographic and meteorological conditions that trap pollutants.
C. The status of auto emissions programs can vary by state and over time. In some cases, states have implemented, modified, or canceled auto emissions testing programs based on legislative decisions, budgetary constraints, or changes in federal requirements.
Given that the question seems to imply a specific state and historical context (e.g., the legislature's actions in 1995), the true statement(s) would depend on the actual air quality data and legislative history of that state at the time in question. Without more specific information, it is not possible to definitively say which of the above statements is true. If this question pertains to a particular state and time period, it would be necessary to research the air quality data and legislative history for that state to provide an accurate answer.

With Regard to Air Quality, Which of the Following Is