Which statement describes the formation of diamonds?

a. diamonds form in talc under very low pressure.

b. diamonds form in talc under ver high pressure.

c. diamonds form in kimberlits under very high pressure.

d. diamonds form in kimberlits under very low pressure.

The answer to the question, 'which statement describe the formation of diamonds is option C. Diamond deposits are formed in the earth mantle and release to the earth surface by mean of volcanic eruptions which produce kimberlites. The formation of diamonds require very high temperatures and pressures. These conditions exist below the earth surface at the depth of about 150 kilometers and 1050 degree Celsius temperature.