According to freud, the hidden, unconscious desires expressed indirectly in a dream's symbolic content is its content.

According to Freud, the hidden, unconscious desires expressed indirectly in a dream's symbolic content is its latent content

This refers to the hidden underlying meaning of the dream which could be distinct from its original content and is indicative of the deeper or hidden meaning.

the first question's answer is a.

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.