A learner writes: The terms under that the licence was granted have changed. Which diagnosis is accurate?
Under must be deleted because relative clauses cannot contain prepositions.
That should be who because terms are plural.
The clause is correct because that can follow any preposition.
That must become which because under is fronted and terms are things.✓Correct answer
Explanation
The fronted preposition under must be followed by which for the inanimate antecedent terms. Number does not license who, and deleting the preposition would remove the relationship expressed by the clause.