Step 1: Understanding the Relevance of Evidence.
Under the Indian Evidence Act, statements and actions made in the course of a transaction or conversation that can shed light on the fact in question are relevant. In this case, the statements made by D in the presence of A, A's silence, and the fact that A asked C to lend him money all relate to the question of whether A owes B money.
Step 2: Explanation of the options.
- (a) The facts that A asked C to lend him money: This is relevant as it relates to A’s financial state.
- (b) D said to C in A’s presence and hearing— “I advise you not to trust A, for he owes B 10,000 rupees”: This is relevant as it is an admission of debt made in A’s presence.
- (c) A went away without making any answer: A’s silence could be interpreted as acknowledgment of the debt.
- (d) All of the above: All the statements and actions are relevant under the Evidence Act as they contribute to proving whether A owes B the amount.
Step 3: Conclusion.
Thus, the correct answer is (d) All of the above.