The most surprising issue that the writer witnessed in France was D.
how sparsely the countryside is populated
In the Letter from Charles Stanley Lamb to his mother during World War I, he noted how France's countryside was sparsely populated.
Charles was not surprised by:
- The number of German prisoners of war
- The homesickness of soldiers
- His French language ability.
Thus, the most surprising issue faced by Charles Stanley Lamb was Option D.
Learn more about World War I here: https://brainly.com/question/971935
