Mode of nutrition in Paramecium is

Paramecium is an organism of submarine life.
They are slipper like an elongated organism, covered with short hair- suchlike structures known as “ Cilia ”.
Paramecium survives through heterotrophy. 
It feeds on small organisms analogous as endosymbiotic algae, bacteria and incitement
The food passes from cilia to an organ called “buccal depression". Now, through the cytostome, the food ultimately enters into the food vacuole of the cell.
This digestion of the food results in a drop of pH position (7-8).
- When food digests completely, the vacuole shrinks and expels out the nutrients into the cytoplasm.
This shrunk vacuole is now transferred to the anal severance, where it burst and throws out all of the waste material outside the body of Paramecium.
Saprophytic or Saprozoic is the mode of nutrition displayed by organisms who feed on the dead and decaying matter to survive.

Hence, option B is the correct answer.