Which has the final approval for signing new bills into law?

Bills go by the lawmaking body more often than not require the endorsement of the official, for example, the ruler, president. An exemption was the Irish Free State from the cancellation of the Governor-General in December 1936 to the formation of the workplace of President in December 1937, amid which period bills endorsed by the Oireachtas moved toward becoming law quickly.

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What are the options for the question i'll get back to you asap if you could let me know