Blood clam belong to the family:

Correct option is B

Correct Answer: (b) Arcidae
Explanation:
→ The blood clam (Anadara spp., e.g., Anadara granosa) belongs to the family Arcidae (ark clams).
→ Named “blood” clam because of haemoglobin-rich haemolymph giving a reddish hue when opened.
Information Booster:
→ Blood clams are commercially important in estuarine aquaculture across Southeast Asia.
Additional Information (Other Options):
(a) Veneridae: venus clams; (c) Myidae: soft-shell clams; (d) Sphaeriidae: small freshwater clams — all different families.