And that 's how all great scientific discoveries are made , by accident - usually food related . CERN purchased a smaller microwave oven for the research staff and turned the LHC towards the hunt for the so called " Oh God ! " particle .

Select from:
1). When people use a smaller microwave ..
2). By people doing things unintentionally ..
3). When people hunt for the answers ..
4). When people have a food related accident ..
Q: How does the narrator think the best scientific discovery is made ?
2).