---- all the experimental parameters were carefully standardized, slight variations in laboratory humidity skewed the final readings.
Answer and explanation
Correct answer: C. Even though
- Step 1: The sentence contrasts thorough experimental standardization with an unexpected flaw in the readings.
- Step 2: 'Even though' introduces an adverbial clause of concession.
Answer
Even though.
Why not the others: 'In case' denotes precaution; 'Provided that' introduces a condition; 'So long as' means on condition that.
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More Advanced Grammar, Clauses and Connectors questions
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