A2-year-old swallowed watch batteries. following ingestion, kidney function was impaired, and the heart began to fail. which of the following was the most likely cause?
a. karyorrhexis.
b. coagulative necrosis.
c. ammonia accumulation.
d. caseous necrosis.

Coagulative necrosis

Explanation:

When cell death occurs due to ischemia or infarction then this is termed as Coagulative necrosis.During this type of necrosis, cell death occurs in a localized area due to lack of oxygen and other nutrients. When a two year old swallows watch batteries then these batteries becomes trapped in the digestive system and inside the digestive tract , the positive and negative terminals of the battery gets bridged by the mucosa leading to the production of the electrical current and increase in the pH of the mucosa.All these condition leads to coagulative necrosis due to which the kidney gets affected and heart failure occurs .

The answer would be sand and gravel

A. radioactive dating