When interpreting the meaning of "My Sweet Old Etcetera" by E.E. Cummings, the option that should be taken into the greatest consideration is d) the symbolism that is used.
Cummings often employs unique language and symbolism to convey deep emotions and themes. In this poem, the use of seemingly simple imagery and the structure reflects on the complexities of relationships, love, and the impact of war. Understanding the symbolism in Cummings' work can provide greater insight into the layers of meaning he constructs, especially in the context of his feelings about love and loss during tumultuous times. While aspects like family relationships and historical context can provide relevant background, the symbolic elements are crucial for unpacking the poem's emotional depth.