psychology (N.) : the scientific study of the human mind and how it influences behaviour
physiology (N.) : the scientific study of the normal functions of living things
sociology (N.) : the study and classification of human societies
philology (N.) : the scientific study of the development of language or of a particular language

Correct Option: B

psychology (N.) : the scientific study of the human mind and how it influences behaviour
physiology (N.) : the scientific study of the normal functions of living things
sociology (N.) : the study and classification of human societies
philology (N.) : the scientific study of the development of language or of a particular language

fratricide (N.) : the crime of killing your brother/sister
patricide (N.) : the crime of killing your father
regicide (N.) : the crime of killing a king/queen
homicide (N.) : murder; the crime of killing somebody deliberately

Correct Option: A

fratricide (N.) : the crime of killing your brother/sister
patricide (N.) : the crime of killing your father
regicide (N.) : the crime of killing a king/queen
homicide (N.) : murder; the crime of killing somebody deliberately

masochist (N.) : a person enjoying something that most people find unpleasant or painful (sexual enjoyment)
nihilist (N.) : a person who believes that nothing has any value, especially religious and moral principles
egoist (N.) : a person who thinks that he/she is better than other people and who thinks and talks too much about himself/ herself
sadist (N.) : a person who gets pleasure from hurting other people (sexual)

Correct Option: A

masochist (N.) : a person enjoying something that most people find unpleasant or painful (sexual enjoyment)
nihilist (N.) : a person who believes that nothing has any value, especially religious and moral principles
egoist (N.) : a person who thinks that he/she is better than other people and who thinks and talks too much about himself/ herself
sadist (N.) : a person who gets pleasure from hurting other people (sexual)

intestate (Adj.) : having made no legal will
intaglio (N.) : depressed/ sunken carvings/ engravings on precious stones
inveterate (Adj.) : always doing something or enjoying something and unlikely to stop (a bad habit)
insolvent (Adj.) : not having enough money to repay the debt; bankrupt

Correct Option: C

intestate (Adj.) : having made no legal will
intaglio (N.) : depressed/ sunken carvings/ engravings on precious stones
inveterate (Adj.) : always doing something or enjoying something and unlikely to stop (a bad habit)
insolvent (Adj.) : not having enough money to repay the debt; bankrupt

fastidious (Adj.) : being careful that every detail of something is correct; meticulous
maiden (Adj.) : being the first of its kind (speech, journey by a plane/ship), etc.
medieval (Adj.) : connected with the Middle Ages (about AD 1000 - AD 1450)
precarious (Adj.) : not safe/ certain; dangerous

Correct Option: A

fastidious (Adj.) : being careful that every detail of something is correct; meticulous
maiden (Adj.) : being the first of its kind (speech, journey by a plane/ship), etc.
medieval (Adj.) : connected with the Middle Ages (about AD 1000 - AD 1450)
precarious (Adj.) : not safe/ certain; dangerous