Meaning: 'Observed' means to watch or notice something carefully, especially in a scientific context.

Wrong options:

• regarded: 'Regarded' implies a judgment or opinion about something, which does not fit the context of simply seeing the ladybug.
• glanced: 'Glanced' suggests a quick or brief look, which does not convey the careful attention implied in the context of a ladybug hunter.
• considered: 'Considered' means to think about something carefully, which does not match the action of seeing the ladybug.

Correct answer: widespread

Explanation: The term 'widespread' accurately describes the extensive distribution of the ladybug population in New York, fitting grammatically as an adjective that modifies 'population.' It conveys the idea of being found over a large area, which is essential to the context.

Meaning: 'Widespread' means existing or happening in many places or among many people.

Wrong options:

• thorough: 'Thorough' implies completeness or detail, which does not relate to the geographical distribution of the ladybug population.
• overall: 'Overall' refers to something taken as a whole, which does not specifically address the distribution aspect required here.
• comprehensive: 'Comprehensive' means covering completely or broadly, but it does not specifically indicate the geographical spread like 'widespread' does.

Correct answer: recorded

Explanation: The word 'recorded' is the past participle of 'record,' fitting grammatically as it indicates that the sighting was documented. Contextually, it aligns with the idea of keeping track of sightings, which is crucial for understanding the ladybug's status.

Meaning: 'Recorded' means to have documented or noted something officially.

Wrong options:

• accounted: 'Accounted' suggests that something has been included in a count or report, which does not fit the context of documenting a sighting.
• marked: 'Marked' implies a physical or symbolic indication, which does not convey the act of documenting a sighting as 'recorded' does.
• entered: 'Entered' typically refers to inputting data into a system, which does not match the context of documenting a sighting.

Correct answer: practice

Explanation: The word 'practice' fits grammatically as a noun that describes a repeated action or method. Contextually, it refers to the method of crowdsourcing, which is a systematic approach to gathering data.

Meaning: 'Practice' means a customary, habitual, or expected procedure or way of doing something.

Wrong options:

• ritual: 'Ritual' implies a ceremonial act, which does not fit the scientific context of data collection.
• habit: 'Habit' refers to a regular tendency or practice, but it lacks the formal connotation needed in this context.
• manner: 'Manner' describes a way of doing something but does not convey the systematic approach implied by 'practice'.

Correct answer: played

Explanation: The word 'played' fits grammatically as the past tense of 'play,' indicating involvement in a process. Contextually, it suggests that these individuals contributed to scientific development, which aligns with the narrative of citizen science.

Meaning: 'Played' means to take part in or contribute to an activity or process.

Wrong options:

• put: 'Put' implies placing something somewhere, which does not convey the idea of involvement in science as effectively as 'played.'
• done: 'Done' indicates completion of an action but lacks the nuance of participation that 'played' provides.
• added: 'Added' suggests contributing something extra, which does not capture the active role implied by 'played' in the context of scientific development.