Meaning: 'Appears' means to be seen or to show up, indicating that Jonathan is featured on postage stamps.

Wrong options:

• appeals: 'Appeals' suggests making a request or attracting interest, which does not fit the context of being depicted on stamps.
• distracts: 'Distracts' implies causing someone to lose focus, which is irrelevant to the context of Jonathan being on stamps.
• associates: 'Associates' refers to forming connections or relationships, which does not convey the idea of being featured on stamps.

Correct answer: over

Explanation: The word 'over' is appropriate here as it indicates the duration of the birthday party, suggesting that it took place during the weekend. This preposition fits grammatically and contextually with the sentence structure.

Meaning: 'Over' in this context means during or throughout a period of time, indicating when the birthday party occurred.

Wrong options:

• under: 'Under' implies being beneath something, which does not convey the correct meaning of time in this context.
• over: 'Over' indicates duration, while 'under' does not fit the temporal context of the celebration.
• beneath: 'Beneath' suggests a physical position below something, which is not relevant to the timing of the party.
• side: 'Side' does not convey any temporal meaning and is irrelevant in this context.

Correct answer: estimated

Explanation: The word 'estimated' is the correct choice as it refers to an approximation of Jonathan's age based on available information. This fits grammatically and contextually, as it indicates that his age is not definitively known.

Meaning: 'Estimated' means calculated roughly or judged based on available data, indicating that Jonathan's exact age is not confirmed.

Wrong options:

• accurate: 'Accurate' means correct or precise, which does not fit since his age is not definitively known.
• excellent: 'Excellent' refers to something of high quality, which is irrelevant to the context of age estimation.
• extreme: 'Extreme' suggests something at the highest degree, which does not apply to the context of age.

Correct answer: grazing

Explanation: The word 'grazing' fits perfectly as it describes Jonathan eating grass, which is a natural behavior for tortoises. This verb aligns with the context of the sentence, providing a visual image of Jonathan's activity.

Meaning: 'Grazing' means to feed on growing grass or plants, indicating what Jonathan was doing in the photograph.

Wrong options:

• grabbing: 'Grabbing' implies taking hold of something quickly, which does not accurately describe the action of eating grass.
• eavesdropping: 'Eavesdropping' means secretly listening to a conversation, which is unrelated to the context of Jonathan's behavior.
• gradating: 'Gradating' refers to changing gradually, which does not apply to the action of eating.