Rewrite the statement by choosing the appropriate options.
Among the historical sources _____________ sources are based on Modern technology.
(d) is the answer because Audio visual service provides web streaming, video conferencing and live broadcast services with the help of technology.
(a) is not the answer because hand-written records don’t have any of technology
(b) is not the answer because oral sources are only partially attributed to modern technology
(c) is not the answer because Material objects are the items with physical stuff. They are mainly shaped or produced by human action. For example, a coin is the product of human action.