Which word is closest in meaning to “meticulous”?

A little clarity goes a long way.

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  A (Careless):

  Careless means not paying enough attention; it is an antonym of meticulous.
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  B (Thorough):

  Meticulous means showing great care and attention to detail; “thorough” is the closest option.
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  C (Hasty):

  Hasty means done too quickly, often without care; it does not imply attention to detail.
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  D (Indifferent):

  Indifferent means unconcerned or uninterested; it does not mean careful.