4. A wasp’s stinger has an average length of 2.67×10^−3 meter long. What is this length in decimal notation?

option 1: 2.67
option 2: 267000
option 3: 2670
option 4: 0.00267

The length of the wasp's stinger, in decimal notation, is 0.00267. So, the correct option is option 4.