Final answer:
The remnant of a Type Ia supernova is a white dwarf that is completely destroyed in the explosion.
Step-by-step explanation:
The remnant of a Type Ia supernova is not expected to contain a black hole or neutron star (option A), as these objects are typically formed from the collapse of a massive star. Instead, the remnant is expected to be a white dwarf (option B). During a Type Ia supernova, a white dwarf accretes enough material from a companion star to exceed the Chandrasekhar limit, causing it to collapse and explode. The explosion completely destroys the white dwarf, leaving behind no remnant.