The given information in table format is as shown below:-
LCD
LED
Plasma
Produced
Sold
Import/Export
Produced
Sold
Import/Export
Produced
Sold
Import?Export
Net
2006
875
400
475
375
500
-125
850
825
25
375
2007
950
500
450
475
450
25
750
750
0
475
2008
1000
600
400
500
850
-350
750
750
0
50
2009
950
651
299
675
800
-125
575
650
-75
99
2010
950
700
250
700
900
-200
575
500
75
125
2011
1025
875
150
775
975
-200
550
500
50
0
The negative sign in Import/Export signifies Import The net external trade of 2006 =475+125+25=625 Net export of 2007 =450+25=475 Net export in 2008 =400+350=750 Net export in 2010 =250+200+75=525 Thus, The external trade was the highest in the year 2008 Hence, option C is the correct answer.