Final answer:
Truett Cathy founded Chick-fil-A in the early 1960s, but the Greensboro sit-in, which started in 1960, does not provide information about when the first Chick-fil-A mall restaurant opened.
Step-by-step explanation:
Truett Cathy founded Chick-fil-A Inc. in the early 1960s. However, the information provided about the Greensboro sit-in does not furnish the exact year of the opening of the first Chick-fil-A Restaurant at a mall, but this event was a significant moment in the civil rights movement. The Greensboro sit-in, which began on February 1, 1960, was initiated by four African American students from North Carolina Agricultural & Technical College. This sit-in became a pivotal act of nonviolent protest against racial segregation in the United States, particularly in Woolworth's lunch counter, and was a catalyst for similar protests across the nation.