Answer:
the author characterize the juror
The answer is D. You have to keep the verb tenses the same as well as active/passive voice. For 'A', you have active voice/passive voice. For 'B' and 'C', the verb tenses are not the same (b is present tense/past tense and c is past tense and past perfect tense). 'D' can be the only correct answer in following grammar rules.
I think it would be however.
The answer is concerns about the well-being of older adults are heightened by two facts.