1. .…… can be considered as raw data. (a) Sithum’s G. C.E. (O/L) examination results (b) Z-Score of G. C.E. (O/L) examination results
(c) The average marks of students of G. C.E. (O/L) examination
(d) The top ten total marks of students of G. C.E. (O/L) examination

(a) Sithum's G.C.E. (O/L) examination results

Explanation:

Raw data which is also known as primary data, are the data collected when performing a research, investigation or study, which are obtained through a survey, experiment, or observation and from which correlations and distributions can be calculated, only when the data is complete

Therefore, raw data is unprocessed data, and the option which can be considered as raw data is the option which is not processed, which is Sithum's G.C.E. (O/L) examination results.

1. a

2. a

3. d

explanation: