Kereng conducted a study on the number of road accidents that occurred between 1990 and 1994 in area V. Data was initially recorded in a table. The data from the table was then used to produce the figure shown below.

1. aSuggest any three departments that Kereng might have visited to collect information for the study. [3]
2. bSuggest any three problems that Kereng might have encountered during her study. [3]
3. cDescribe how you would present Kereng's data in table form. [6]

You'll mark your own answer against the marking guide when you hand it in.