The image contains a map of the world with geological cross-sections and legends. The question is about matching the geological cross-sections with the correct labels on the map, indicated by the letter 'A'. However, the actual question asking for the corresponding number or digit is missing from the provided image. Therefore, I can only describe the elements present.

Description of Geological Elements:

The image displays four geological cross-sections, each labeled as 'Рисунок 1' through 'Рисунок 4'. Each cross-section illustrates different layers of the Earth's crust using distinct patterns and symbols. A legend is provided for these symbols, identifying them as:

• Осадочный слой (Sedimentary layer) - represented by a pattern of dots and short vertical lines within a rectangle.
• Гранитый слой (Granitic layer) - represented by a pattern of '+' symbols.
• Базальтовый слой (Basaltic layer) - represented by a pattern of 'V' shapes.

Each 'Рисунок' shows a combination of these layers stacked vertically, with the sedimentary layer typically at the top, followed by granitic and then basaltic layers deeper down. For instance:

• Рисунок 1 shows dots, then '+', then 'V' symbols.
• Рисунок 2 shows dots, then '+', then 'V' symbols.
• Рисунок 3 shows 'V' symbols, then dots, then '+' symbols.
• Рисунок 4 shows '+' symbols, then 'V' symbols, then dots.

There is a map of the world with latitude and longitude lines. A point is marked on South America, labeled with the letter 'A'. The text states "обозначенной на карте буквой А" (marked on the map by the letter A) and "правильно показано строение земной коры в точке" (correctly shows the Earth's crust structure at the point). There is also text asking to "Запишите соответствующую цифру." (Write the corresponding digit.) However, the digit to be written is not provided, and the connection between point 'A' and the specific cross-section number (1, 2, 3, or 4) is not explicitly stated or visually linked in the image.

Note: Without the specific question asking to match point 'A' to one of the numbered cross-sections or a clear visual indicator on the map, it is impossible to provide a definitive numerical answer.