Answer:
a.Shows like Tango Argentina began to tour.
Explanation:
1 is your answer to the problem
Synonyms may help people to figure out meanings by known words. If a word's meaning is unknown, atleast one of the synonyms must be a known word. So, the meaning of the unknown word can be explained by the meaning of the known synonym, as a synonym is an alternative word with the same meaning.
D. Reduces the intensity of a light source