Aconcrete poem, such as "seal,"
a. has few or no figures of speech.
b. contains a single image or idea and musical language.
c. has a shape that suggests its subject.
d. is a traditional form of japanese poetry.

A concrete poem, such as "Seal", has a shape that suggests its subject.

Option C

Explanation:

‘Seal’ is a beautiful poem written by William Jay Smith. The poem consist of one stanza of twenty-eight lines. Seal is a shape poem that suggests a subject, seal.

The main subject of this poem is seal, the poem revolves around the mammal ‘Seal’ where the poet describes the life of Seal in the sea.

Smith have put forward some good vocabulary which illustrates seal as being joyful, and relaxed. ‘See how he swims

With a swerve and a twist’ such line gives the reader a clear visual of how the seal swim in the sea.