rohan2345
During the survey,
the architecture firm took into account only the concerns of its client, not those of surrounding homeowners.
A. the architecture firm took into account only the concerns of its client
B. the architecture firm has only taken into account the concerns of their client
C. the architecture firm only took their clients' concerns into account
D. the concerns of its clients only were taken into account by the architecture firm
E. clients had their concerns only taken into account by the architecture firm
A. the architecture firm took into account only the concerns of its client --> correct
B. the architecture firm has only taken into account the concerns of their client --> "their" (plural) refers to firm (singular), which is a mistake
C. the architecture firm only took their clients' concerns into account --> same as B
D. the concerns of its clients only were taken into account by the architecture firm --> in this construction "those" wouldn't properly refer to "concerns" anymore
E. clients had their concerns only taken into account by the architecture firm --> same as B, also similar to D
My explanation is not that good, however, I am certain that A is correct