Xorijiy til

Why does the sample 2 get the highest score?
Task achievement: The model answer describes the overall trend first,

followed by an analysis of the different energy sources. Numerical evidence is

used sparingly to illustrate the trends. The main trends are used as the basis of

a prediction in the final sentence.

Coherence and cohesion: Trends are explained in general terms first,

followed by supporting figures. Some energy sources are grouped together for

ease of understanding. It and this are used throughout as cohesive devices, and

the writer uses the former and the latter to refer back to information in a previous

sentence.