What transformed American business and industry in the 1980s?

The late 1970s were a time of bright miniskirts, mirrored disco balls and platform shoes. But the wild changes taking place 30 years ago weren't all in music and fashion.

Inside office suites, workers were learning to type memos into their Altair personal computers while hoping to become an important cog in a big, corporate wheel. But as the 1980s arrived, career goals were shifting for those who found cubicle life stifling and who were bold enough to take risks.

An entrepreneurial age was coming, fueled by social change, new sources of capital and new technologies. While some jumped at the chance to start a business, others were pushed by mass corporate layoffs, mergers and growing anxiety about job security.

Option 2

Explanation:

During summer, several cities across the country experience a high temperature of +45 degree Celsius. Due to such high temperature cities experience dry hot air during day time and sometimes also  in the night.

Thus, option 2 is correct