Each sentence states a permanent trait and a particular past occasion. Which sentence contains an error in the present-condition-to-past-result mixed pattern?
If Eva enjoyed crowds generally, she would have attended the launch on Monday.
If Tomas had been more meticulous by nature, he would have caught the typo yesterday.✓Bonne réponse
If Leila trusted strangers easily as a rule, she would have shared the code during last night's call.
If Ben lacked patience as an enduring trait, he would have left the hearing last Thursday.
Explication
The Tomas sentence is erroneous because had been treats his meticulousness as a past episode even though by nature marks it as permanent. A standing trait takes a past-simple condition before the unreal result at yesterday's proof check.