The term protobiogenesis is used for theory of :
Biochemical origin of life
Panspermia
Spontaneous generation
Special creation
As we have discussed in Chemical Evolution & Miller’s Experiment -
Protobiogenesis refers to the soup-like broth of chemicals formed in oceans of the early earth from which living cells are believed to have appeared. It was termed by Haldane as ‘prebiotic soup’ or ‘hot dilute soup’.Hence, the correct option is (a)