Explanation:

When goods are purchased on a credit basis, it means that the payment for those goods is not made immediately but will be made at a later date as per the mutually agreed terms. In this scenario, the correct book to record the purchase transaction would be the Purchases Book.

Purchases Book:
The Purchases Book is a subsidiary book that records all the credit purchases of goods. It is used to record purchases of goods for resale or for use in the business. The entry for the purchase of goods worth Rs. 5,000 on credit would be recorded in the Purchases Book.

Journal Proper (General Journal):
The Journal Proper, also known as the General Journal, is used to record transactions that cannot be recorded in any other specialized book. It is used for non-routine or special transactions. However, the purchase of goods on a credit basis is a routine transaction and can be recorded in the Purchases Book.

Bills Receivable Book:
The Bills Receivable Book is used to record the bills or promissory notes received by the business from its debtors. It is not appropriate to record the purchase of goods on credit in the Bills Receivable Book because bills receivable are the instruments of payment received by the business, not the goods purchased.

Purchases Return:
The Purchases Return book is used to record the return of goods purchased on credit. It is the reverse entry of the Purchases Book. In this scenario, there is no purchase return mentioned, so it is not relevant to record the purchase of goods on credit in the Purchases Return book.

Therefore, the correct option to record the purchase of goods from E worth Rs. 5,000 on a credit basis is the Purchases Book.