What is the non finite in we could not help laughing at the incident

The present and past participles and the to infinitive are the most common of these. The base form is often used in a non-finite way. Every verb can be used in a clause in either a finite or non-finite way. A verb is finite if it is found in a clause in combination with a subject and a tense.

Explanation:

hit the heart

the answer is a . the absence of love

most likely the answer would be a.) cupidity

definitions:

cupidity - greed for money or possessions

hydrophobia - extreme or irrational fear of water, especially as a symptom of rabies in humans

pathology - the science of the causes and effects of diseases, especially the branch of medicine that deals with the laboratory examination of samples of body tissue for diagnostic or forensic

patho -   relating to disease