33) C

On the graph, you can clearly see that the closest pairs of bars are (1994, 1997) and (1995, 1996). The bar for 1998 can be seen discreetly as being small compared to all other bars.

Farm crops:
The figures of 1994 and 1997 are fairly far apart so this cannot be correct.

Horticulture:
The figures of 1994 and 1997 are fairly far apart so this cannot be correct.

Livestock:
The figures of (1994,1997) and (1995, 1996) are fairly close so this can potentially be correct.

Products:
The figures of all 5 years are very close, meaning that all bars should roughly be the same height. However, the bars shown on the graph show that not all 4 bars are of the same height. Hence this cannot be correct.

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