वाक्य में सुधार करने के लिए रेखांकित भाग के स्थान पर सबसे उपयुक्त विकल्प चुनें: 'When scaling the Himalayas, the higher one ascends, the lesser oxygen is available.'

Select the option that improves the underlined part of the sentence: The boy told his teacher to explain the passage.

Select the option that improves the underlined part of the sentence: We demonstrated to them how we were prepared the artistic patterns.