Option 1 states that a Money Bill can be introduced only in the Lok Sabha. This means that the bill related to matters such as taxation, government borrowing, or expenditure from the Consolidated Fund of India can only be introduced in the lower house of parliament.

Option 2 suggests that a Deputy Speaker can also certify a Money Bill in case the office of the Speaker falls vacant. This means that if the Speaker is unavailable or the office is vacant, the Deputy Speaker can take over and fulfill the role of certifying a Money Bill.

Option 3 states that the authority to determine whether a bill is a Money Bill or not rests solely with the Speaker of the Lok Sabha. This means that the final decision regarding the classification of a bill as a Money Bill or not lies with the Speaker and cannot be questioned.

Option 4 is correctly identified as the incorrect feature. It states that a Money Bill can be referred to a joint committee of the two Houses. However, this is not true as Money Bills are typically not referred to joint committees. They are usually discussed and decided upon within the Lok Sabha itself.

In summary, all the features mentioned in options 1, 2, and 3 are correct, but option 4 is incorrect as Money Bills are not typically referred to