Answer: a

Explanation:
Bona fide is a Latin term meaning in good faith. It’s more often used to mean authentic these days. Bonified is a common misspelling for it — and one that attracts a lot of mockery — but it’s actually a word. Bonify is a somewhat archaic term that means to make something good, especially something that was bad before. Both the bona of bona fide and the bon of bonify come from the Latin word for good, bonus.

Wordnik lists these among mistaken examples of bonified online:

• “At this point, the only thing that will change anything is a bonified miracle of the highest kind.”
  Face It, Progs: Obama’s a Dud « Antiwar.com Blog
• “It amazes me what the art community will accept as bonified art.”
  Situational Taxidermy
• “My father, a 52-year-old bonified curmudgeon, has not viewed any movie trailer in the last ten years with anything other than codified disinterest.”
  2008 June « the balcony fool

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Explanation:
There’s no real rhyme or reason to which phrases we make into compound words and which ones we don’t. This is one of the former. “Notwithstanding” means “despite” — despite the widespread (and well-deserved, IMO) hatred for iTunes, Apple’s gadgets continue to be sprinkled with fairy dust.

When my husband was an English prof, he used to get some interesting errors in student essays. One student was particularly fond of “bethatasitmay.” Which seems pretty bad, until you start to think about a few of the legit compound words:

hereinafter
nevertheless
wherewithal
insofar
aforementioned
heretofore

The Grammarphobia blog explains more about compound words, their origins and uses.

I could admit that I thought “notwithstanding” was two words, but I just admitted last week that I thought the expression was wracking my brains. So I will not admit that I thought that.

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