[amp_mcq option1=”3″ option2=”4″ option3=”5″ option4=”6″ correct=”option3″]
The correct answer is C. 5.
A partial-order solution is a solution to a planning problem in which the order in which some of the actions are performed is not specified. This means that there are multiple possible plans that can achieve the same goal.
In the example given in the question, there are 5 possible plans:
- P1: A – B – C – D – E
- P2: A – C – B – D – E
- P3: A – D – B – C – E
- P4: A – E – B – C – D
- P5: A – B – D – C – E
Each of these plans is a valid solution to the problem, but they differ in the order in which the actions are performed.
Option A is incorrect because there are 5 possible plans, not 3.
Option B is incorrect because there are 5 possible plans, not 4.
Option D is incorrect because there are 5 possible plans, not 6.