How is air temperature related to high and low pressure air?
a) temperature is not related to air pressure, only humidity.
b) cool air forms low pressure areas, while warm air forms high pressure areas.
c) high pressure air make other air warmer; low pressure air make other air cool
d) cool air near the surface forms high pressure areas; warm air forms low pressure areas

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.