Final answer:
The No Child Left Behind Act (NCLB) was replaced by the Every Student Succeeds Act (ESSA), which was signed into law in 2015.
Step-by-step explanation:
The legislative act that replaced the No Child Left Behind Act of 2001 (NCLB) is A. Every Student Succeeds Act (ESSA) (PL 114-95), which was signed into law by President Obama on December 10, 2015. The ESSA replaced the NCLB and shifted more accountability and decision-making back to the states and local schools while maintaining the requirement for annual testing. The law's intention is to provide equal educational opportunities and to prepare all students for success in college and careers, leaving behind the prescriptive requirements of NCLB which had become increasingly unworkable.