Questions

Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth

Special Friend - Stone.

Example ::

He is my special friend - He is my stone.

Hypnology is the study of sleep.

BP Kanungo was appointed as Deputy Governor in Reserve Bank of India (RBI) for three years. The Appointments Committee of Cabinet (ACC) has approved his appointment to the post with effect from the date of taking over the charge on or after April 3, an order issued by Personnel Ministry said. He has been appointed in place of R Gandhi, it said.
Kanungo was in March last year appointed as Executive Director in the central bank.

Te Sun.

From the time rising it goes around the house upto sunset, but never touches the house.

Koala is a animal that exclusively eat only eucalyptus leaves and nothing else.

Answer A is incorrect because it pertains to the processes. Answer C is incorrect because these are the five phases of a project. Answer D is incorrect because there are 39 processes, not knowledge areas.