The correct answer is 20. 10. 2018The term maturity refers to the date on which a bill of exchange or a promissory note becomes due for payment. In arriving at the maturity date three days, known as days of grace, must be added to the date on which the period of credit expires instrument is payable. Where the date of maturity is a public holiday, the instrument will become due on the preceding business day. But when an emergent holiday is declared under the Negotiable Instruments Act 1881, by the Government of India which may happen to be the date of maturity of a bill of exchange, then the date of maturity will be the next working day immediately after the holidayThus, Maturity date = Date of drawing + Tenure + 3 grace days. ?The maturity date will be 16. 07. 2018 + 3 Months + 3 Days = 19. 10. 2018 but 19th October 2018 is declared a sudden holiday hence the maturity date will be the immediate next working day i. e. 20. 10. 2018Additional InformationBill of Exchange: According to the Negotiable Instruments Act 1881, a bill of exchange is defined as œan instrument in writing containing an unconditional order, signed by the maker, directing a certain person to pay a certain sum of money only to, or to the order of a certain person or to the bearer of the instrument.