Meaning: 'Beating' refers to the intense and continuous action of the sun shining down, creating a sense of warmth and discomfort.

Wrong options:

• glowing: 'Glowing' suggests a soft light rather than the intense heat implied here, making it less suitable in this context.
• striking: 'Striking' implies a sudden impact, which does not accurately convey the continuous nature of the sun's effect in this scenario.
• tapping: 'Tapping' suggests a light or gentle action, which contradicts the strong and oppressive heat described in the sentence.

Correct answer: surge

Explanation: The word 'surge' is appropriate as it conveys a sudden and powerful feeling of pride, fitting well with the context of discovering something significant, which is emphasized by the exclamation of pride.

Meaning: 'Surge' means a sudden increase or rush, particularly of emotion, indicating a strong feeling of pride in this context.

Wrong options:

• seizure: 'Seizure' typically refers to a medical condition or a sudden attack, which does not fit the context of feeling pride.
• bound: 'Bound' implies a leap or jump, which does not accurately capture the emotional experience described in the sentence.
• leap: 'Leap' suggests a physical jump rather than an emotional response, making it unsuitable for conveying the feeling of pride.

Correct answer: hands

Explanation: The word 'hands' is the correct choice as it refers to the position of being on all fours, which is a common expression used to describe crawling or searching on the ground, fitting the context of the sentence.

Meaning: 'Hands' refers to the body parts used for support while crawling, emphasizing the physical effort involved in the activity described.

Wrong options:

• arms: 'Arms' alone does not convey the full action of crawling, as it does not imply the use of the knees, which is essential in this context.
• elbows: 'Elbows' suggests a specific part of the arm and does not accurately describe the position of being on all fours.
• wrists: 'Wrists' are not typically associated with crawling, making this option irrelevant in the context of the sentence.

Correct answer: dies

Explanation: The word 'dies' fits well as it conveys the idea that conversation fades away or becomes less lively, which aligns with the context of drifting into daydreams.

Meaning: 'Dies' means to gradually come to an end or diminish, indicating that the conversation is losing its energy.

Wrong options:

• falls: 'Falls' implies a sudden drop, which does not accurately describe the gradual fading of conversation in this context.
• runs: 'Runs' suggests continuity or flow, which contradicts the idea of conversation diminishing as the group becomes absorbed in their thoughts.
• dries: 'Dries' typically refers to moisture and does not apply to conversation, making it an unsuitable choice.

Correct answer: nonchalant

Explanation: The word 'nonchalant' is appropriate as it describes a casual or indifferent attitude, which fits the context of the reply being understated and lacking excitement about the discovery.

Meaning: 'Nonchalant' means showing a lack of concern or enthusiasm, indicating a relaxed attitude towards the impressive achievement.

Wrong options:

• indecisive: 'Indecisive' refers to uncertainty or inability to make a decision, which does not match the confident tone of the reply.
• careful: 'Careful' implies caution or thoughtfulness, which contrasts with the casual nature of the response described.
• thoughtless: 'Thoughtless' suggests a lack of consideration, which does not accurately reflect the pride implied in the context of the reply.