In the following questions, out of the four

Solution

Superficial: appearing to be true, real or important until you look at it more carefully; not concerned with anything serious or Important and lacking any depth of understanding or feeling; shallow. (a) Defective: having a fault or faults; not perfect or complete; faulty. (b) Superior: better in quality than somebody or something else; higher in rank, importance or position. (c) Deep: having a large distance from the top to the bottom. (d) Shallow: not deep; not showing serious thought, feeling, etc., about something; superficial.