From the text, it is correct to infer that the scientists were fortunate. (Option D).
The scientists were fortunate because without looking too hard, they discovered a new specie of frog completely by chance.
The textual evidence of this is given as follows:" While eating lunch, one scientist looked down. He saw a little frog jump onto a nearby rice sack, and he caught it with his hands. The creature turned out to be a new species of long-nosed frog."
A fortunate person is one who by a turn of event seems to be favored by chance given the turn of events.
In this case, the scientist were very fortunate because they found a new specie of animal when they weren't even searching. This buttressed the fact that the correct answer is Option D.
Learn more about inference at;
https://brainly.com/question/25913650
#SPJ1