I'm not 100% sure but I think it is A. Sorry if it is wrong.
Answer:
In families where there is a high level of conflict and animosity between parents, children are at a greater risk of developing emotional, social and behavioural problems, as well as difficulties with concentration and educational achievement.
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1.) are
2.) is
3.) are
4.) was
5.) is
6.) am
7.) were
8.) is/was
9.) am
10.) were
Sure! I will be glad to help :)
