How many acres do the regular quarter-quarter sections contain within Section 6?

In the context of land surveying in Oklahoma and under the Public Land Survey System (PLSS), a quarter-quarter section is a subdivision of a section, which is typically one square mile or 640 acres. A section is divided into four quarter sections, each containing 160 acres. Those quarter sections can each be further divided into quarter-quarter sections.

When a quarter section is divided into four equal parts, each quarter-quarter section measures 40 acres. Therefore, within Section 6, each regular quarter-quarter section will contain 40 acres. This breakdown is critical for land allocation and ownership assessments in accordance with state surveying practices.

The other choices do not correspond with the standard division of sections into quarter-quarter sections in the PLSS. 20 acres, 30 acres, and 50 acres do not reflect the correct subdivision practices that classify a quarter-quarter section in this context. Hence, the answer reflecting 40 acres is the accurate and correct choice.