Given the specific circumstances at Watlington $($i$.$e$.$ as presented in the $13$ ltems and all the related materials covered on RWL$),$ which of Kotter's Change Management Steps can be inferred as likely to be most difficult:

Creating a Sense of Urgency

Building the Core Team $($of go$-$to people$)$

Realizing short$-$term wins

none of the above$-$ one of Kotter's other eight steps will clearly be toughest