Which research question would have been most interesting to the gestalt psychologists?

we see a whole instead of many small pieces

The research questions would most of the people interestingly asked Gestalt psychologists would be about;

Why do we perceive objects in specific groups?

Gestalt psychologists demonstrated that certain postulates subsist because the mind has an inherent distribution to perceive exemplars in the stimulus based on several rules. These principles of grouping would consider for the consideration that humans spontaneously observe objects as designed patterns and objects, principle is known as Pragnanz. These principles are classified into five categories: Continuity, Closure, Proximity, Similarity, and Connectedness.