I quite personally think B would be essential, but on an unbias and more economically challenged note, either A and B or D. As all of them play an important role in the economy. Whether it is with jobs, resources, or communication.
Answer:
The contrast between anticipated and actual instances of language change is actually:
A: anticipated and actual instances of language change
A random and novel ways of directing future language changes
Answer B: random and novel ways of directing future language changes philosophical and psychological.
Explanation:
Explanation:
a detailed and careful study of something to find out more information about it
किसी विषय में या पर अनुसंधान या शोधकार्य (किसी विषय के ज्ञान में वृद्धि के लिए उसका विस्तृत और सुविचारित अध्ययन)
No they are different and used for different things