$\text{Correct answer: D}$ 

$\text{Option (A):}$ 

$?$ Biotechnology is used in field of agriculture for development of crops that have better nutritional value, higher yield and high adaptability. 

$?$ Plants are developed which can grow in extreme climatic conditions. 

$\text{Option (B):}$ 

$?$ Biotechnology is not used in field of automobiles. Modern technology is utilized for development of automobiles. 

$\text{Option (C):}$ 

$?$ Biotechnology is used in medicine. Gene rapy is one of few practices which are used as a treatment of genetic disorders. 

$?$ Biotechnology is used in process of developing treatment processes in medicine. 

$?$ Biotechnology is also used to develop different diagnostic processes to detect both genetic and pathogenic disorders. 

$\text{Option (D):}$ 

$?$ Biotechnology is used in process of medicine and agriculture. In both se fields, new strategies related to Biotechnology are useful. 

Hence, correct answer is option (D).