Step 1: Determine the question's intent.
The phrase "increasing radius of influence in wells" is atypical. Higher permeability in a material enables a well's drawdown to propagate further and more rapidly, resulting in a larger radius of influence. Consequently, the question likely requests an ordering of materials based on increasing permeability. Alternatively, within the context of well construction, this could refer to the layered arrangement of a gravel pack surrounding the well screen, which progresses from fine to coarse with increasing distance from the screen. The latter interpretation will be adopted, given its prevalence in design practices.
Step 2: Order the materials by particle size, from finest to coarsest.
Particle size correlates with texture.
- Finest: B. Fine sand
- Next: A. Fine to medium sand
- Next: D. Coarse sand
- Coarsest: C. Coarse gravel
Step 3: Construct the sequence.
The sequence, ordered by increasing particle size (and consequently, increasing permeability and outward layering in a gravel pack), is: B \(\rightarrow\) A \(\rightarrow\) D \(\rightarrow\) C.