The acceleration due to gravity of a catastrophic earthquake will be

Peak ground acceleration (PGA) during catastrophic, large-magnitude earthquakes can reach values comparable to or exceeding the acceleration of gravity. Reference accounts of catastrophic events (e.g., 1960 Valdivia, 2004 Indian Ocean, 2011 Tōhoku) describe extreme shaking and near-total destruction associated with such events [1]. Seismological summaries and measured accelerograms report that while many earthquakes produce fractions of g, more severe near‑field ground motions have recorded accelerations of about 1·g or greater (g ≈ 980 cm/s²), implying PGA can exceed 980 cm/s² in catastrophic cases [2]. Therefore the best choice among the options is “> 980 cm/sec2.”

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 14: Earthquakes > 14.5. Richter Magnitude Scale > p. 183
2. [2] https://www.sciencedirect.com/topics/engineering/ground-acceleration