Answer:
1) D
2) C
3) D
Step-by-step explanation:
1) It is asking about height so it can be in meters or centimeters. Your seat cannot be 45 meters because that's too high. So it's centimeters.
2) It can either be milliliters or liters but 18,000 milliliters is too less for a swimming pool (it is about 18 liters which is definitely not enough). So it's liters.
3) Cars are heavy so it's 1000 kilograms. It cannot be grams because you weigh more than 1000 grams.