Correct Answer - Option 2 : Only 1 follows.
According to the given statement:
All nitrogen is unique.
All fertilizers are useful.
Conclusions:
1. Some Fertilizers Are Useful → As all fertilizers are useful, some fertilizers are also useful. So, the conclusion I follow.
2. Some Fertilizers are Nitrogen → As no information given between the fertilizers and Nitrogen in the statements. So, conclusion II does not follow/
Hence, "Only 1 follows" is the answer.