Glasses, cameras, flashlights, binoculars, telescopes and peepholes are all made using __ lenses
a.) concave lenses
b.) convex lenses

Option (B) is true. convex lens

Explanation:

In all the devices as cameras, flashlights, binoculars, telescopes, pinholes, etc, we have to use convex lens, because in all such devices we have to concentrate the light at a point and which can be done by convex lens.

Convex lens converges the rays of light.

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.