In the product of the diels–alder reaction below, highlight – by clicking on – the newly formed σ bonds.

A Diels-Alder reaction is an addition reaction involving a substituted alkane and a diene forming a cyclic aromatic compound. The resulting cycloalkene will be disubstituted with only one double bond in the ring. The 2 pi bonds from the diene will be replaced by 2 sigma bonds.

The most plausible answer is b, duration. the given amount of time is considered how long it last for.