Step 1: Grounds under Section 13 HMA.
Classic grounds include adultery, cruelty, desertion, conversion, unsoundness of mind, virulent leprosy (now removed), venereal disease in a communicable form, renunciation, and not heard alive for 7 years.
Step 2: Check the options.
- (b) & (c) — expressly recognised grounds.
- (d) — recognized as a ground in s.13(1)(v) (leprosy ground was repealed in 2019; venereal-disease ground remains).
- (a) — “imprisonment for seven or more years” is not a ground under HMA.
\[
\boxed{(a)}
\]