Answer :
In the poem "My Father's Song" by Simon Ortiz, the hands of the speaker's father serve as a symbol in the following option :
D. They represent the loving protection that the older generation should offer to the younger generation.
The father is imparting invaluable lessons in survival to the speaker. This knowledge of sowing a corn field, respecting and nurturing all forms of life, and the concept of responsibility will come in handy in his future life as an adult.
The poem also highlights the importance of oral tradition in which knowledge necessary for survival is passed down the generations in a verbal manner.