Select the most appropriate option to fill in the blank.
The rescue team dug out a soldier from the snow _________ how he could have survived for seven days buried under it.

Options

A. wondering
B. wondered
C. to wonder
D. wonder

Explanation

(a) wondering- सोच- characterized by or expressive of a desire to know something, curious.
(d) wonder- आश्चर्य- a feeling of amazement and admiration, caused by something beautiful, remarkable, or unfamiliar.