Best Online CAT Coaching

Option (a)
Analysis: Typically refers to a detailed examination of the elements or structure of something. It's often used in scientific or data-driven contexts.
Systematically: Refers to something done according to a fixed plan or system; methodically. It doesn't fit well with the context of someone intentionally slowing down in a race.
Waving: Refers to moving one's hand to and fro in greeting or as a signal. "Waving" seems too informal and less precise in the context of a deliberate gesture during a race.
Option (b)
Overview: Refers to a general review or summary of a subject. It's too broad and superficial for the context, which requires a more thorough examination.
Purposely: Means intentionally. It fits the context well, but the other words in the option are less suitable.
Beckoning: Means making a gesture with the hand, arm, or head to encourage someone to come nearer or follow. While this could work, it still doesn't fit as precisely as "signalling" in the context of a race.
Option (c)
Investigation: Means a formal or systematic examination or research. This is appropriate for a thorough examination of the runner's actions.
Deliberately: Means intentionally. This fits perfectly with the context of the runner intentionally slowing down.
Signalling: Means making an action or gesture to convey information or instructions. This fits well with the context of communicating with another runner during a race.
Option (d)
Appraisal: Refers to an act of assessing something or someone. While it's close in meaning to "investigation," it often implies a judgment or evaluation rather than a detailed inquiry.
Particularly: Means to a higher degree than is usual or average. This word doesn't fit the context of the sentence at all.
Speaking: Refers to the action of conveying information or expressing one's thoughts and feelings in spoken language. This doesn't fit the context of the non-verbal communication implied in the scenario