What is a series of instructions or commands that a computer follows used to create software

Which number on the image above correctly indicates the name of a folder in this url? a.1b.2c.3d.4

What is added to the < meta > tag to describe the encoding type?

Barbara is interested in pursuing a career in the science and math pathway. which qualifications will her reach that goal? a.an advanced knowledge of physics and math b.an advanced knowledge of engineering and math c. an advanced knowledge of physics and robotics an d. advanced knowledge of machinery and math