'Root words' are described as the basic version of words that acts as an agent to form a varied number of new words by adding a suffix or prefix to it.
As per the given description, the given chart of medical root words would be completed by placing the meaning/definition 'liver'(in X's place) for 'hepat'(o) while 'eye'(in Y's place) for 'opthalm'(o). Both these words can form different medical terms(that would assist her to learn more conveniently) like;
