The correct answer is - They wanted a word for their unique cultural identity.
The word chicano is a word used between the American that have Mexican origin (Mexican-Americans), with the purpose of representing their unique cultural identity. The word is mostly used as chicanos, for man and boys, though some women and girls too use it and adopt it, in the version of chicanas.
The Mexican-Americans have a unique culture. While they have the cultural basis in the Mexican, Latino culture, they are also Americanized to a certain degree, thus possessing traits of the English culture as well, making them unique in that department. In order to describe their culture, and themselves as part of it, they chose to use this word.
B. Nonviolent
MLK believed in non-violent protest and all of his rallies were free of physical violence (ex: lunch counter sit ins)
It was true that many troops were sent to Mexico based on the announcement that president Trump had made together with the Mexican president. According to their agreement terms, they signed an agreement that allowed the troops to go to Mexico and support their forces in ending the crisis that had engulfed for a long time.
The negotiation was mainly about the exports, and the troops were to protect the borders through the laws that had been passed to protect the data that will enter and leave a given country subsequently.