Correct option is C
The correct option is (c).
Explanation:
The correct substitution for the highlighted words is Option (C) "groundbreaking research in genetics". The word 'groundshaking' is rarely used to describe scientific discoveries; the idiomatic and correct term is 'groundbreaking', which means innovative and pioneering.
Grammatical rule used:
The correct adjective to modify 'research' in this context is 'groundbreaking'. Additionally, 'genetics' is the correct name of the field of study, while 'genetic' is usually an adjective.
Example:
Marie Curie did groundbreaking work on radioactivity.
Information Booster:
Common collocations for 'research' include 'extensive research', 'pioneering research', and 'groundbreaking research'. Avoid using literal translations of physical intensity (like groundshaking) for intellectual achievements. So the correct answer is (c)