Rajasthan Police Constable Model Paper 5

There is no information provided by the given statements that tells us that flowers and seeds are produced by plants. Hence option (1) does not follow.
Again, no information given in support of the second and fourth options. Hence, option (2) and (4) do not follow.
Since plants grow from seeds (P <- S) and seeds are produced by flowers (S <- F), it can be inferred that some plants are produced from flowers (P <- F). Hence,option (3) follows.