Please help with a few questions.

1)What's required whenever there's a break in the wiring?
A. Box
B. Joint
C. Splice
D. Solder

2) which installation would be likely to see a two-wire service?
A. Air conditioner
B. Fluorescent lighting
C. Range
D. Signboard

3) Aldo has just installed a jumper to
A. Connect to black wires.
B. Allow easier connection to a splice.
C. Connect two neutrals
D. Bypass a load.

4) Marlon is adding a duplex receptacle in her bedroom. What connections will she see on it?
A. Two silver, two brass, and one green terminal.
B. One black and one white terminal.
C. One brass and one silver terminal.
D. One black, one white, and one green terminal.

6)Ellie‘s Christmas tree lights all went out at the same time. The plug works, and the cable is fine. What’s going on?
A. Because the bulbs are of low wattage, a small power surge blew them all out.
B. They are wired in series. When one bulb goes out, they all do.
C. The tree most likely was poorly ventilated, and the bulbs overheated.
D. They are wired in parallel. When one both goes out, they all do.