2 Develop cause–effect diagrams for the following types of problem:

(a) staff waiting too long for their calls to be answered at their IT helpdesk

(b) poor food in the company restaurant

(c) poor lecturing from teaching staff at a university

(d) customer complaints that the free plastic toy in their breakfast cereal packet is missing

(e) staff having to wait excessively long periods to gain access to the coffee machine.