The answer is likely D: all of the above, due to this being a complex reality we live in.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	_
2	answer	answer	NOUN	NN	Number=Sing	5	nsubj	5:nsubj	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	5:cop	_
4	likely	likely	ADV	RB	_	5	advmod	5:advmod	_
5	D	D	NOUN	NN	Number=Sing	0	root	0:root	SpaceAfter=No
6	:	:	PUNCT	:	_	5	punct	5:punct	_
7	all	all	DET	DT	_	5	appos	5:appos	_
8	of	of	ADP	IN	_	10	case	10:case	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	10:det	_
10	above	above	ADJ	JJ	Degree=Pos	7	nmod	7:nmod:of	SpaceAfter=No
11	,	,	PUNCT	,	_	5	punct	5:punct	_
12	due	due	ADP	IN	_	18	mark	18:mark	_
13	to	to	SCONJ	IN	_	12	fixed	12:fixed	_
14	this	this	PRON	DT	Number=Sing|PronType=Dem	18	nsubj	18:nsubj	_
15	being	be	AUX	VBG	VerbForm=Ger	18	cop	18:cop	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	18	det	18:det	_
17	complex	complex	ADJ	JJ	Degree=Pos	18	amod	18:amod	_
18	reality	reality	NOUN	NN	Number=Sing	5	advcl	5:advcl:due_to	_
19	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	20	nsubj	20:nsubj	_
20	live	live	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	18	acl:relcl	18:acl:relcl	_
21	in	in	ADP	IN	_	20	obl	20:obl	SpaceAfter=No
22	.	.	PUNCT	.	_	5	punct	5:punct	_
