Topic: Substitution, Expression, & Definition,

Best Answer Explained in Below-:

The question "One who pretends illness to escape duty" describes behavior typically associated with avoiding responsibilities. However, the correct answer in this context is not "Truant" but rather "Malingerer." A "malingerer" specifically refers to an individual who feigns illness or incapacity to avoid work or duty, effectively manipulating their condition to escape obligations or responsibilities.

On the other hand, a "truant" typically refers to a student who stays away from school without permission, indicating a broader context of cutting class rather than explicitly pretending to be ill.

The other options, such as "hypocrite," signify someone who acts in contradiction to their stated beliefs or feelings, and "concubine" relates to a woman who lives with a man and has a recognized relationship without formal marriage, which is unrelated to the context of pretending illness.

In summary, while "truant" aligns with shirking responsibilities, "malingerer" accurately captures the nuance of feigned illness, making it the correct choice for describing someone who pretends to be sick to escape duty.