Final answer:
The correct match for the sedimentary environment is 'Glacier / pebbles / conglomerate', as glaciers transport pebbles which can lithify into conglomerate.
Step-by-step explanation:
Among the options provided, the correct sentence that matches the sedimentary environment would be 'D) Glacier / pebbles / conglomerate'. This is because the glacial environment is known for transporting a range of sediment sizes, including pebbles, that when become lithified form a type of clastic sedimentary rock known as a conglomerate. Glacial environments typically carry and deposit large clasts, which can include pebbles, leading to the formation of conglomerate rocks.