Final answer:
The National Party did not adopt 'The Call of South Africa' as a new anthem in 1957; this song was combined with 'Nkosi Sikelel' iAfrika' to form the new national anthem in 1994, symbolizing a united, post-apartheid South Africa.
Step-by-step explanation:
The statement that In 1957, the National Party adopted a new anthem, 'The Call of South Africa' is false. 'The Call of South Africa' (Die Stem van Suid-Afrika), written by C.J. Langenhoven in 1918, was part of the national anthem during the apartheid era. However, in 1994, with the advent of democracy and the end of apartheid, a new national anthem was adopted by President Nelson Mandela that combined two songs: 'Nkosi Sikelel' iAfrika' and 'The Call of South Africa'. This new anthem reflects the five of South Africa's eleven official languages: Xhosa, Zulu, Sesotho, Afrikaans, and English, signifying unity and the nation's diverse heritage.
The national anthem of South Africa is symbolic of the country's political and cultural transformation. Along with other significant changes such as a new national flag, the anthem represents South Africa's emergence from a past of division to a future that values unity and equality.