Final answer:
The correct option is b. Comprehensive coverage is the insurance that would cover damages to a legally parked automobile caused by a mudslide.
Step-by-step explanation:
An insured whose legally parked automobile is damaged by a mudslide may collect for damages under comprehensive coverage.
Comprehensive coverage is an optional auto insurance coverage that covers damages to your vehicle caused by events other than a collision, such as fire, theft, vandalism, and natural disasters like mudslides. In this case, the insured's legally parked automobile was damaged by a mudslide, which falls under the coverage of comprehensive insurance.