Correct option is C
·
In situ measurement relates to
soil moisture, hence A–III.
· USDA is known for its
Textural classification chart, hence B–I.
· Arrangement of soil particles refers to
soil structure, hence C–IV.
· A pressure
above 15 bars is the
wilting point, hence D–II. Thus, the correct match is:
A–III, B–I, C–IV, D–II.