The correct answer is D. Only I and II are implicit.
The statement is an advertisement for a two bedroom flat in the court area for immediate possession. This implies that the advertiser is looking for a flat that meets these criteria. It also implies that the advertiser believes that there are flats available in the court area that meet these criteria, and that some people will respond to the advertisement. However, it does not imply that it is a practice to give such an advertisement.
Assumption I is implicit because the advertiser is looking for a flat in the court area. This implies that the advertiser believes that there are flats available in the court area.
Assumption II is implicit because the advertiser is expecting some people to respond to the advertisement. This implies that the advertiser believes that there are people who are interested in buying a two bedroom flat in the court area for immediate possession.
Assumption III is not implicit because the statement does not say anything about whether or not it is a practice to give such an advertisement.