Step 1: Understanding the observed days.
The listed days, such as World No Smoking Day, Sadbhavana Divas, National Science Day, World Human Rights Day, and World Literacy Day, are all globally observed to raise awareness on various important issues.
Step 2: Analyzing the options.
(A) u, v, w, x, and y: Correct, all of these days are officially observed to spread awareness on different causes.
(B) v, w, x, and y: Incorrect, World No Smoking Day is missing from this option.
(C) u, v, and w: Incorrect, World Human Rights Day and World Literacy Day are missing.
(D) u, v, w, and y: Incorrect, World Human Rights Day is missing.
(E) None: Incorrect, as the correct answer is provided above.
Step 3: Conclusion.
The correct answer is (A) u, v, w, x, and y, as all these days are observed globally.