Someone please explain the following.
The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic peoples has been established by carbon dating, but what is much more difficult to determine are the use to which primitive peoples put the caves, the reason for their deterioration, and the meaning of the magnificently depicted animals.
a) has been established by carbon dating, but what is much more difficult to determine are
b) have been established by carbon dating, but what is much more difficult to determine are
c) have been established by carbon dating, but what is much more difficult to determine is
d) has been established by carbon dating, but what is much more difficult to determine is
e) are established by carbon dating, but that which much more difficult to determine is
OA: D
The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic peoples has been established by carbon dating, but what is much more difficult to determine are the use to which primitive peoples put the caves, the reason for their deterioration, and the meaning of the magnificently depicted animals.
a) has been established by carbon dating, but what is much more difficult to determine are
b) have been established by carbon dating, but what is much more difficult to determine are
c) have been established by carbon dating, but what is much more difficult to determine is
d) has been established by carbon dating, but what is much more difficult to determine is
e) are established by carbon dating, but that which much more difficult to determine is
OA: D
