constitutional amendment initiates a national income tax passed by which one:

Theodore Roosevelt
Woodrwo Wilson
William Taft

I think it is Taft

No president passes a Constitutional amendment. An amendment is passed by the people.

http://en.wikipedia.org/wiki/Sixteenth_Amendment_to_the_United_States_Constitution

I meant who was in n office when constitutional amendment initiates a national income tax

Yes, Taft is correct.

http://en.wikipedia.org/wiki/Amendments_to_the_United_States_Constitution

Scroll down to find the list of amendments and the date each was enacted.

http://en.wikipedia.org/wiki/Presidents_of_the_United_States
Scroll down to find the list or presidents; find the one who was in office at the time you want.

Thanks

You are correct! The constitutional amendment that initiated a national income tax was indeed passed during William Taft's presidency. Here is an explanation of how you can reach this answer:

To find the answer, you need to research the period when the national income tax was introduced in the United States. This happened with the passage of the 16th Amendment to the United States Constitution in 1913.

Theodore Roosevelt served as the 26th President of the United States from 1901 to 1909. During his presidency, there was no constitutional amendment passed to institute a national income tax.

Woodrow Wilson became the 28th President of the United States and served from 1913 to 1921. This means that he was in office when the 16th Amendment was ratified and the national income tax was implemented. However, Wilson did not initiate the amendment, as it was actually proposed by Congress and ratified by the states during his presidency.

William Howard Taft served as the 27th President of the United States from 1909 to 1913. During his presidency, the 16th Amendment was proposed by Congress in 1909 and ratified in 1913. Therefore, Taft was the president when the constitutional amendment initiating the national income tax was passed.

In conclusion, it was William Howard Taft who was the President of the United States when the constitutional amendment initiating the national income tax was passed.