The correct answer is option 4, Speaker of Lok Sabha. The Speaker of Lok Sabha has the authority to decide whether a bill is a `Money Bill` or not. A `Money Bill` is a bill that exclusively deals with matters related to taxation, borrowing of money by the government, or expenditure from the Consolidated Fund of India. The Speaker`s decision on the classification of a bill as a `Money Bill` is final and binding. The Finance Minister, President, and Chairman of Rajya Sabha do not have the power to determine whether a bill is a `Money Bill.` It is important to note that a `Money Bill` can only be introduced in the Lok Sabha, and once passed by the Lok Sabha, it is sent to the Rajya Sabha for its recommendations.