Answer:
The answer is option B.
How has the language used to describe childbirth changed since the early 20th century?
Explanation: The options provided on the question have different type answering view.
The first option is a type of question which demands for accurate information. Because there is 'where' and 'who' pronouns which is demanding for information. So there is no scope for an individual to draw his own conclusion.
The second option is a type of question which demands the description of a process.In this question an individual can illustrate his own view by researching about the agenda. Moreover,at the end one can add his conclusion.
The third option is a kind of question which asks for others comment. Because in the question it is asked to describe the advice of the doctor. So here is no scope for an individual to write his conclusion.
In the fourth question there is a demand for drawing a comparison between midwife and obstetrician. This question requires the research about two subject,but not the conclusion of the writer.
So option b is the correct answer.
