answer these questions around 150 words

What would be your answer to the following queries regarding multiple regression analysis?

(a) I am trying to find out why people go bankrupt. I have gathered data from a sample of people filing bankruptcy petitions. Will these data enable me to find answers to my questions? Explain.

(b) I want to study the costs of auto accidents. I have collected data from a sample of police auto accident reports. Are these data adequate for my purpose? Explain.

(c) I am fitting a demand for food function for a sample of 1,000 families. I obtain an R-squared of only 0.05 but Stata indicates that the F-statistic for the equation is very significant and so are the t-statistics. How can this be? Did I make a mistake when I ran the regression?