The correct sentence is:
Each person’s brain develops and forms new connections, but it is not aware of these changes.
The antecedent of the pronoun "it" is "each person’s brain".
The correct answer is the second one. In John Keats' "Ode on a Grecian Urn", the speaker knows the urn will still be around for others to see after he is dead. In the final lines of the poem, he says "When old age shall this generation waste / Thou shalt remain [...] a friend to man", which goes to show that the urn will outlive the speaker's own generation and remain a testimony of beauty for centuries to come.
Well if it decribes the feeling of lust or love then its romantic. or if it mentions relationship actions of each other then that also a romantic characteristic.
