The correct word is given as :-
behaviour, conclusion

Correct Option: D

As we can say that ,
The correct word is filled in the above given sentence :-
Unpredictable behaviour of the child could not lead the consultants to any conclusion.

Expert professionals are having to train, and students supplant (replace) teachers.
The correct word is given as :-
are, supplanting

Correct Option: A

As we can say that ,
Expert professionals are having to train, and students supplant (replace) teachers.
The correct word is filled in the above given sentence :-
A growing number of these expert professionals are having to train foreigners as the students end up supplanting the teachers who have to then unhappily content with no jobs at all or new jobs with drastically reduced pay packets

The correct word is given as :-
teeming, against

Correct Option: B

As we can say that ,
The correct word is filled in the above given sentence :-
When you want to digitalise a city teeming with millions, you don’t bet against the odds.

The situation due to the genocides is sinister, which means threatening. So the other word which will fill the first blank has to complement sinister. Thus the options which may fit in can be disingenuous (which means lacking in frankness, candor, or sincerity) or tragic. The other three words are positive words. In the last part of the sentence, 'to ……………. and perpetrators alike' the contrast between the blank word and perpetrators (to commit: to perpetrate a crime) is quite clear. So the correct option is victims, which is antonym to perpetrators.

Correct Option: C

The situation due to the genocides is sinister, which means threatening. So the other word which will fill the first blank has to complement sinister. Thus the options which may fit in can be disingenuous (which means lacking in frankness, candor, or sincerity) or tragic. The other three words are positive words. In the last part of the sentence, 'to ……………. and perpetrators alike' the contrast between the blank word and perpetrators (to commit: to perpetrate a crime) is quite clear. So the correct option is victims, which is antonym to perpetrators.
The correct word is filled in the above given sentence :-
The genocides in Bosnia and Rwanda, apart from being mis-described in the most sinister and disingenuous manner as 'ethnic cleansing', were also blamed, in further handwashing rhetoric, on something dark and interior to victims and perpetrators alike.

As we can say that ,
The correct word is filled in the above given sentence :-
over

Correct Option: D

As we can say that ,
The correct word is filled in the above given sentence :-
Sheila gained an advantage over me.