Option 1: 1,000 cubic centimetres (cm3) are in a litre (L), not a cubic metre (m3). Therefore, this option is incorrect.

Option 2: This is the correct answer. There are 1,000,000 cubic centimetres (cm3) in a cubic metre (m3). This conversion is based on the fact that there are 100 centimetres in a metre, so the volume of a cube with sides measuring 1 metre is 1,000,000 cubic centimetres.

Option 3: 1,000,000,000 cubic centimetres (cm3) are in a cubic metre (m3). Therefore, this option is incorrect.

Option 4: 1,000,000,000,000 cubic centimetres (cm3) are in a cubic metre (m3). Therefore, this option is incorrect.

In conclusion, the correct answer is option 2, which states that there are 1,000,000 cubic centimetres (cm3) in a cubic metre (m3).