I think it is A. Natural Sculpture, because your question asks about a type of environment sculpture, so pretty sure it is natural from the environment. Hopefully it is right :)
• the farmer is bald, wearing glasses, with a stern look on his face and his eyes starring straight at the viewer.
the farmer is wearing a white shirt buttoned to the collar under worn blue jean coveralls with a dark wool dress jacket.
the farmer is holding a pitchfork with his strong right hand.
the pitchfork pattern is mimicked in this coverall and shirt.
the farmers wife is standing just to her right and behind the farmer
she has light colored hair that is parted in the middle and pulled back tightly
she seems to be looking just to the right of the viewer
she isn’t smiling or frowning but looks somewhat melancholy to me
In the middle ground I see:
a 2 story, white house with board & baton siding
the gothic style window on the 2nd story is positioned directly in the middle of the house and towards the middle of the painting with a sheer printed curtain hanging
below the porch roof is a double 2 over 2 country style window
the porch is held up with turned columns
In the background I see:
round tree tops in shade of green
the very tip of a church steeple peeking out above the tree tops
a light blue sky with a few soft clouds
Explanation:
Elements of Art used in the art work: Textures
the clothing is smooth
pitchfork is shiny, cold and pointed sharp
ric rack & broach are bumpy
man’s face looks leathery from the sun and lumpy with the wrinkles of age and hard work