The correct answer is C.
The phrase “took to heart” means to be deeply affected by something. In this case, the man was deeply affected by the death of his wife. He was very much attached to her, and her death caused him a great deal of pain.
The other options are incorrect. Option A, “was shocked by,” is not a strong enough word to describe the man’s reaction to his wife’s death. He was not simply shocked; he was deeply affected. Option B, “was ruined by,” is also incorrect. The man’s life was not ruined by his wife’s death; it was changed, and he was deeply affected by it. Option D, “was condoled,” is also incorrect. The man was not simply condoled; he was deeply affected by his wife’s death.