Select the sentence that has the correct use of words and spellings from the options given below.

To identify the correct sentence, let's examine the spelling and usage of the words in each option:

1. "The scientiest meticulously analysed the complex data, uncovering ground-breaking insights that would revolutionice the field."
- "scientiest" is an incorrect spelling of "scientist".
- "revolutionice" is misspelled; it should be spelled with an 's' ("revolutionise") in British English or a 'z' ("revolutionize") in American English, but never a 'c'.
Thus, this option is incorrect.

2. "The scientist meticulusly analysed the complex data, uncovering ground-breaking insights that would revaulutionise the field."
- "meticulusly" is misspelled; the correct spelling is "meticulously".
- "revaulutionise" is misspelled; the correct spelling is "revolutionise".
Thus, this option is incorrect.

3. "The scientist meticulously anelysed the complex data, uncovering ground-breaking insights that would revolutionise the feild."
- "anelysed" is misspelled; the correct spelling is "analysed" (British English) or "analyzed" (American English).
- "feild" is misspelled; the correct spelling is "field" (following the rule "i before e except after c").
Thus, this option is incorrect.

4. "The scientist meticulously analysed the complex data, uncovering ground-breaking insights that would revolutionise the field."
- All words in this sentence, including "scientist", "meticulously", "analysed", "revolutionise", and "field" are spelled correctly using standard British English conventions.
Thus, this option is correct.

Conclusion:
The correct sentence is: "The scientist meticulously analysed the complex data, uncovering ground-breaking insights that would revolutionise the field."