Sentence Correction

The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength-0.1 millimeters-is too long to be registered by the eye.

(A) infrared radiation, however, is invisible because its wavelength-0.1 millimeters-is too long to be registered by the eye
(B) however, the wavelength of infrared radiation-0.1 millimeters-is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength-0.1 millimeters-is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible

OA:A

Thanks for posting Fiza.

I was down to A vs C, but I choose Option C, which is a wrong answer.

I eliminated A as it looks like passive to me. Perhaps, experts will help us understand why A is correct.

Richa,

problem with option C is ,"it" is not having clearing referent.
it can either refer to "wavelength" or "radiation"
logically it should refer to "Radiation"

Richa,

problem with option C is, "It" is not having clear referent.
it can either refer to wavelength or radiation.
logically it should refer to "radiation"