Answer-When pressure is increased the melting point of ice –

In this case. if we increase the pressureontheicetheice-watersystemwantsto try to lower it again. It can do that by making itself fit into a smaller volume. But since water fills a smaller volume when its liquid, rather thansolid,it will gotoalower meltingpoint allowingmoresolidtobecomeliquidandhence when we increase pressure,the meltingpointof icedecreasesbecauseoftheinversalrelationship between the pressure and melting point of ice.