First Blank

What kind of investors need assurance that the banks that they trust with their money are secure? Well, the not-so-confident investors of course! The word is timorous, showing or suffering from nervousness or a lack of confidence.

The choice parsimonious which means stingy or very unwilling to spend money or use resources is obviously a trap answer, for it is a term related money and the attitude of people with respect to money. And therefore can describe investors.

And tawdry which means showy but cheap and of poor quality does not fit in well, given the clues.

Second Blank

Since it is a thorough process, it must identify both the stable and not so stable banks. The latter type of banks are also indirectly indicated by the intention to reassure investors that the banks they trust the money with are secure.

So the word is tenuous which means very weak or slight.

The word myopic means short-sighted is not a good contrast to stable.

The word duplicitous means deliberately deceptive and it is an extreme judgmental statement and does not objectively contrast with "stable" and also the reviewing individuals who have no vested interests are unlikely to make such a prejudiced statement.

Third Blank

Since the banks are reviewed by individuals with no vested interest in the banks or the investors, and the recommendations are highly regarded, they must be objective without any personal bias. The word is unprejudiced.

The choice vacillating means to wavering. But the clues don't point to this word.

The choice veritable means something is true, real, or genuine. We need a word that means unbiased and not something that means genuine and real. Hence we reject it.