Under what circumstance can minimum rent be waived?

The correct response identifies that minimum rent can be waived if income has decreased due to changed circumstances. This scenario is significant because significant changes in a family's financial situation, such as job loss or a reduction in hours worked, can create an increased financial burden. The provision for waiving minimum rent in such cases acknowledges these hardships, allowing the family to retain housing security without the pressure of meeting a set minimum rental amount despite their decreased income.

The other options do not directly pertain to the criteria for waiving minimum rent: gaining new employment typically indicates an improvement in financial status rather than a need for relief, while additional welfare benefits might not necessarily correlate with relaxing the rent requirements. Similarly, while a family member becoming disabled is a substantial life change that often merits assistance, it is not itself a direct condition for waiving the minimum rent unless it directly impacts the family's income adversely.