Refer to figures. 
Relief Portrayal

General features are a range of prominent surface features like woods (green shaded areas), power stations and hill figures. 
Coastal and river shown in blue.

Ground elevation is shown in form of contour lines. Contour lines connect point of equal elevation. 
An elevation tint is used to emphasize changes in the landform and they are shown in the form of a legend.

Note: This question is seen in the UK CAA as a ‘tick box’ question, with two reworded options. “Shading” was replaced with “Tints of different colours” and “Gradual scale” was replaced with “Graduated scale”. Please provide any feedback available from any other authority in the comments. Thank you in advance!