The Vietnamese artist exhibiting work in United States reported that one of her artistic challenges had been the former widespread unavailability of paper and canvas in wartime, which she said often forced her to work on matchboxes and scrapes of newsprint.
a) her artistic challenges had been the former
b) her artistic challenges had been the formerly
c) her artistic challenges is the former
d) their artistic challenges is the former
e) their artistic challenges had been the former
I am confused between choice a and b. Please help with explanations.
Thanks
a) her artistic challenges had been the former
b) her artistic challenges had been the formerly
c) her artistic challenges is the former
d) their artistic challenges is the former
e) their artistic challenges had been the former
I am confused between choice a and b. Please help with explanations.
Thanks












