Intimacy is close acquaintance. So, here relation between the pair is that of word:meaning.
A-evanescent means temporary which is antonym from permanency.
D-obsessed means to pursue something rigourously/to be preoccupied with something. This doesnt mean attraction.
C-enclose means to surround. Parantheses is pair of brackets which is used to enclose something. Parantheses is application of enclose but not the meaning.
B-to articulate is to speak in certain way/give voice/express. Speech also means to give voice or speak or express.
Hence, according to me, B is the right option.
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