Electric
current passes through a filament of an incandescent bulb, thereby increasing
it temperature. When current flows, it contains electrons through the filament
to produce light. Typically, incandescent light bulb consists
of a glass enclosure that contains tungsten filament. The glass enclosure
contains either a vacuum or an inert gas that serves as the filament protection
from evaporating. Incandescent light bulbs contain a stem attached at to its
base to allow the electrical contacts to run through the envelope without gas
or air leaks.
Answer:

Explanation:

A hydroxide of a metal is a base.

B is wrong. HCl is an acid.
C is wrong. NaCl is a salt.
D is wrong. Water is neutral.
B. 8
Although it may seem that transition metals would have more than 8 valence electrons, they in fact do not.
Explanation:
measuring the change of temperature when 2 liquids are mixed
Answer:
That should be Hydrogen.
So The second option Is legit!