Explanation : Research design is a broad and comprehensive
action plan or strategy formulated by
researcher for obtaining the answers of
research question. The research design
explains the type of research (experimental,
survey, correlational, semi-experimental,
review) and also its sub-type (experimental
design, research problem, descriptive
case-study). The main sections of research
design are: sample selection, formulation of
research plan, tool selection, data collection
and data analysis.
So, A, B, C are its features.
Explanation : Historical, philosophical and ethnographic
studies are types of qualitative research.
Quantitative studies use numerical data
to help generate theories that can be
generalizable to an entire population of data.
Qualitative studies use different methods
to tell a detailed story about a theory or
phenomenon by providing a thick, rich
description that recreates an event, shares
a story, or describes a culture or setting for
interpretation and meaning.
Historical studies: Requiring systematic
collection and evaluation of data to describe,
explain, and understand actions or events
that occurred sometime in the past.
Philosophical studies: Using reflective
procedures and such things as ideas and
ideals, meanings, lived experience, values,
logical relationships, and reasons to shed
light on education practices, counselling
practices, recreation, exercise, etc.
Ethnographic studies: Involving researchers
to completely immerse themselves in the
lives, culture, or situation they are studying.
Explanation : The topic need not be easy but must be
declared in advance to frame a groundwork
and build familiarity with it. The topic must
be of common interest to ensure optimal
participation and minimise distraction.
Students' natural ability in the language/
medium of discussion facilitates the desired
Explanation : The key behaviours of a teacher are:
lesson clarity (direct audible oral delivery),
instructional variety (varying modes of
presentation), task orientation (maximizing
time spent teaching), engagement in the
learning process (preventing students'
misbehaviour and minimising class
disruption), and student success rate (60-
70% of students' time spent on tasks
involving complete understanding of lesson).