Answer:
right answer is option no b
The CRACKES IN CEMENT (ETC) cracked side walks‚ were taught that it's caused by little mini Earthquakes but there are also other natural phenomenons like weathering but when heat is constantly hitting concrete it reacts as always it expands and separates causing cracks in cement.
By only spending only what you know you can pay back without a problem.
回答:
こんにちは私は答えを知りませんが、私はあなたに幸運を祈ります
説明:
申し訳ありません
