Which living conditions are likely to increase the risk of contracting tuberculosis?

The correct choice indicates that crowded, poorly ventilated spaces significantly increase the risk of contracting tuberculosis (TB). TB is primarily spread through the air when an infected person coughs, sneezes, or talks, releasing bacteria into the environment. In settings where many people are in close proximity, especially without adequate airflow, the chance of inhaling these bacteria escalates. Poor ventilation further exacerbates this risk, as it allows airborne pathogens to linger in the air for extended periods.

In contrast, options that refer to open-air environments or well-ventilated homes suggest conditions that disperse and dilute viral particles, thereby reducing transmission likelihood. Similarly, rural areas with low population density generally reduce the risk due to fewer individuals being present to facilitate the spread of bacteria.