If the architect ______ the soil conditions earlier, the foundation might not have cracked during the first winter.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Acheck_circle
had tested
- B
would have tested
- C
tests
- D
tested
Explanation
A past hypothetical conditional uses "had + past participle" in the if-clause and "would/might + have + past participle" in the result clause. "Had tested" is correct.