Which of the following is a composite of a gas and a solid? a.) an apple b.) sediment moving in a river c.) water vapor in the air in a hot shower d.) packing bubbles with air trapped inside them

The answer is D.

The air inside the bubbles is gas and the solid forms the bubble.

Permanently

Explanation:

MPI stands for master patient index. It remains in the hospital permanently. It is a database which is used in the healthcare to maintain its consistency, essential medical documents, managed in a department.

It is necessary to have  records of the patients that once visited the healthcare so that in case the patient comes again there will be a brief description of patient earlier.

This is a type of patients record which is kept in the healthcare for lifetime or permanently.