1.   As goals at Arsenal became fewer, most people plumped for the most obvious explanation.

2.   If there is no obvious explanation for this loss of restraint, what is the hidden one?

3.   The obvious explanation for the vividness of her memory is that it involved an outstanding event in her athletic career.

4.   There is an obvious materialist explanation.

5.   There is no obvious explanation for his strange behaviour.

6.   The obvious explanation is that the finer points of selection were to be left to the LEAs as compensation for loss of power, because central direction was unnecessary.

7.   The most obvious explanation is that reflux of duodenal content into the stomach after operation is responsible.

8.   No obvious explanation was available and Customs and Excise raised an assessment.