Final answer:
The primary symbol used to represent remembrance of those who died in war in 'In Flanders Field' is poppies.
Step-by-step explanation:
The primary symbol used to represent remembrance of those who died in war in the poem 'In Flanders Field' is poppies. The poem is a war poem written during World War I, and the red poppy flower became widely recognized as a symbol of remembrance for fallen soldiers after the poem's publication. The poem describes how the poppies grow among the crosses marking the graves of the soldiers, emphasizing their significance in remembering the sacrifice and honoring the memory of those who died in war.
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