Options:
A.
B.
C.
D.
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Earlier discussion
1 older comment kept for context.
Favour Onwuchekwa
Option D is very correct. This is because Physical reactions are reversible reactions. Freezing of Ice cream is a reversible reaction because when the Ice cream is kept out of the freezer, it gains heat from the air surrounding it and therefore starts to melt returning it back to its former state.