In online learning, who is responsible for checking to make sure assignments are turned in? a. the online teacher c. the lab instructor b. the student d. a lab partner

The correct answer of the given question above would be option A. The one who is responsible for checking to make sure that assignments are turned in, in an online learning is the online teacher. Since the learning takes place online, the only one that is responsible in giving and receiving the tasks or assignments is the online teacher. 

In December 1952 (from Friday 5 to Tuesday 9) over 4,000 people died due to a 5-day temperature plunge which trapped acid aerosols in the atmosphere in London. This harrowing event is known as the "Big Smoke" or "The Great Smog of '52".