Answer: line, shape, texture, form, space, colour and value
<span>The answer is post and lintel. This is used on on windows, weight bearing supports trusses, over doors. This kind of construction is used to carry large heavy weight bearing loads of downward force. This is common in home basements where there are long beams and supporting posts beneath.</span>
The answer is a change in tone.
The best answer is that concertos (which are large bodies of compositional work) were written for professional musicians who commissioned them. So the answer is A. Concerto's are large pieces of work often involving a solo instrument and full orchestra backup.