The key point of the study is that ventures funded through bank loans are more likely to succeed because the fixed monthly repayment motivates entrepreneurs to avoid complacency. To raise the strongest doubt on this finding, one should challenge the premise that the motivation from loan repayment is the main reason for success.
Let's analyze the options:
(A) "Banks only fund those business ventures that have a very high probability of succeeding."
- This option raises doubt by suggesting a selection bias: banks may lend only to ventures that are already likely to succeed, so the observed success may be due to initial venture quality, not the motivation from repayment.
(B) "The study also showed that some ventures that had been funded by an entrepreneur’s friends and relatives were extremely successful."
- This does not strongly doubt the finding; success in some ventures funded by friends and relatives does not negate the general trend.
(C) "Most entrepreneurs agree that the pressure of repaying the bank loans acts as a positive stimulus for them."
- This supports the study’s finding rather than doubting it.
(D) "It is an accepted fact that only those entrepreneurs opt for bank funding who are unable to generate funds from personal sources."
- This suggests a difference in entrepreneur characteristics, but it does not directly challenge the motivation argument.
(E) "According to a different study, there is a strong correlation between an entrepreneur’s educational background and the nature of his business venture."
- This is unrelated to the motivation or source of funding and does not raise direct doubts about the study's finding.
The strongest doubt is raised by (A), as it points out a selection bias where banks fund ventures already more likely to succeed, making the motivation factor secondary.
Answer:
(A)