Answer: C. and D.
Building codes are meant to protect public health and safety; these answers would make the most sense.
Answer: Question # 1: Option B
Question # 2: Option C
Question # 3: Option B
Explanation:
They both keep each branch in its place and make sure their job is being done.
Answer of question 6:
The mark seen on the picture is called: crescendo.
Explanation:
It is an Italian term mark that means gradually getting louder.
As we can notice a crescendo (abbreviated as <em>cresc.</em>) is a horizontal mark with an opening angle (like so: <). It can be followed by another dynamics command.
In order to answer the question 7, the piece is needed.
Answer: AD (Anno Domini) is Latin for "in the year of the Lord" referring to the birth of Jesus Christ.