The correct answer is: Only I and II follow.
The first statement is “All tigers are jungles.” This means that every tiger is a jungle. The second statement is “No jungle is bird.” This means that no jungle is a bird. The third statement is “Some birds are rains.” This means that there are some birds that are rains.
The first conclusion is “No rain is jungle.” This conclusion follows from the first statement and the second statement. The second conclusion is “Some rains are jungles.” This conclusion does not follow from the statements. The third conclusion is “No bird is tiger.” This conclusion follows from the first statement.
Here is a diagram that shows the relationships between the terms in the statements:
[Diagram of a Venn diagram with three circles labeled “tiger,” “jungle,” and “bird. The “tiger” circle is completely inside the “jungle” circle, and the “jungle” circle is completely outside the “bird” circle.]
The diagram shows that all tigers are jungles, and no jungles are birds. It also shows that there may or may not be birds that are rains.
The first conclusion, “No rain is jungle,” follows from the first statement and the second statement. The first statement says that all tigers are jungles. The second statement says that no jungle is a bird. This means that no tiger is a bird. Since all tigers are jungles, this means that no rain is a jungle.
The second conclusion, “Some rains are jungles,” does not follow from the statements. The first statement says that all tigers are jungles. The second statement says that no jungle is a bird. This does not mean that there are some rains that are jungles. It is possible that all rains are not jungles.
The third conclusion, “No bird is tiger,” follows from the first statement. The first statement says that all tigers are jungles. This means that no tiger is a bird.