For Question 1, the statement that is MOST accurate is:
B By the 1960s, most American households owned a television.
This statement reflects a significant point in television history, as the 1960s marked a time when television became a common household item in America.
For Question 2, the event that could have been viewed by as many as 56 million American households is:
B coverage of the assassination of President John F. Kennedy.
Kennedy's assassination on November 22, 1963, attracted one of the largest television audiences in history at that time.