Read the following paragraph and answer the questions below.

(1) One of the most famous landmarks in the world, the Eiffel Tower, in Paris, France, was never supposed to be considered a landmark. (2) The tower, which is named after its prime architect Alexandre Gustave Eiffel, was originally created to be the archway into the 1889 World’s Fair in Paris. (3) The World’s Fair took place in Paris that year, and the Eiffel Tower was meant to be an archway. (4) First, it was initially criticized by some other French artists, it is now considered a cultural icon. (5) People travel from all over the world to visit the Eiffel Tower, and it remains the most profitable tourist attraction in France.

Which of the following transition words could best replace the underlined word in sentence 4?