Option 1 suggests that the sequence of languages in decreasing order of the number of speakers is Spanish, Arabic, and then French, which is the correct answer. Spanish has the most speakers, followed by Arabic, then French.

Option 2 implies that Arabic has the most speakers, followed by Spanish, then French, which is incorrect as Spanish has more speakers than Arabic.

Option 3 refers to the sequence being Spanish, French, then Arabic, which is not accurate as Arabic has more speakers than French.

Option 4 points to Arabic having the most speakers followed by French and then Spanish, which is incorrect due to Spanish having more speakers than either of the other two languages.

In conclusion, Spanish is spoken by the most people, Arabic is the next most spoken language, and French is the least spoken of the three.