I think the answer is a or d???
<span>The key benefit of the government investing in innovation is a long-term financial commitment. Long-term debts are known as long-term loans it consists of loans and financial obligations lasting over one year, it demands exquisite care, concern, and planning before you undertake them. </span>
Radio has transformed society three times, not to mention giving birth to the entire field of electronics. Perhaps no invention of modern times has delivered so much while initially promising so little. When radio arrived at the end of the 19th century, few thought that “wireless” communications, in which intangible signals could be sent through the air over long distances, would be competitive in a world dominated by the telegraph and telephone