Answer
16
Work Step by Step
Alternative 1 (writing):
....... Step 1: select topic... 2 outcomes
....... Step 2: select length.. 3 outcomes
(total Alternative 1= ... mult.principle... = 2(3)=6
Alternative 2 (reading):
....... Step1: select biography... 5 outcomes
....... Step 2: select volume... 2 outcomes
(total Alternative 2= ... mult.principle... = 5(2)=10
TOTAL=... addition principle, 2 alternatives...=6+10=16