Which is not an advantage of a radiant heating? it can replace central heating systems. it can direct warm air where it is needed. it can easily be turned off.

Radiant heating can direct warm air where it is needed and it is not an advantage.

Option B

Explanation:

Radiant heating is the process in which the heat is supplied directly to the floor and to the object. It uses infrared radiation which is a form of electromagnetic waves.

They are capable of heating the floor uniformly. Without any need for corrections and they are easy to install also. Their disadvantage is that they are capable of sucking warm air.

the results is a decrease in air temperature with an increase of altitude.

explanation:

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.