Meaning: 'Tasks' refers to specific jobs or duties that need to be completed.

Wrong options:

• work: The word 'work' is a noun that refers to a general concept of labor or effort, but it does not specify the individual activities as 'tasks' does.
• limited: 'Limited' is an adjective that does not fit as it does not describe a type of activity or job.
• sick: 'Sick' is an adjective that describes a state of health, which does not relate to the activities performed by robots.
• short: 'Short' is an adjective that describes length or duration, which does not apply to the context of activities.
• helpers: 'Helpers' is a plural noun that refers to those who assist, but it does not fit the context of activities performed by robots.
• social: 'Social' is an adjective that describes interactions among people, which does not relate to the activities performed by robots.
• patients: 'Patients' is a plural noun referring to individuals receiving medical care, which does not fit the context of tasks performed by robots.

Correct answer: sick

Explanation: The term 'sick' is an adjective that describes individuals who are ill, fitting grammatically and contextually as it refers to a specific group that robots could assist.

Meaning: 'Sick' refers to individuals who are unwell or suffering from illness.

Wrong options:

• patients: 'Patients' is a plural noun that refers to individuals receiving medical care, but it is more specific and does not fit as broadly as 'sick' in this context.
• tasks: 'Tasks' is a noun that refers to activities, which does not fit as it does not describe a group of individuals.
• limited: 'Limited' is an adjective that describes a restriction, which does not apply to a group of people.
• short: 'Short' is an adjective that describes length or duration, which does not relate to a group of individuals.
• helpers: 'Helpers' is a plural noun that refers to those who assist, which does not describe a group of individuals needing care.
• social: 'Social' is an adjective that describes interactions among people, which does not relate to a group of individuals needing care.

Correct answer: limited

Explanation: The word 'limited' is an adjective that describes the extent of the caretaker value, fitting grammatically and contextually as it indicates a restriction in capability.

Meaning: 'Limited' means restricted in size, amount, or extent.

Wrong options:

• tasks: 'Tasks' is a noun that does not fit as it does not describe a state of value or capability.
• sick: 'Sick' is an adjective that describes a state of health, which does not relate to the value of caretakers.
• short: 'Short' is an adjective that describes length or duration, which does not apply to the context of value.
• helpers: 'Helpers' is a plural noun that refers to those who assist, which does not describe a state of value.
• social: 'Social' is an adjective that describes interactions among people, which does not relate to the value of caretakers.
• patients: 'Patients' is a plural noun referring to individuals receiving medical care, which does not fit the context of value.

Correct answer: helpers

Explanation: The term 'helpers' is a plural noun that refers to robots designed to assist, fitting grammatically and contextually as it describes the role of the machines being developed.

Meaning: 'Helpers' refers to those who assist or provide support.

Wrong options:

• tasks: 'Tasks' is a noun that refers to activities, which does not fit as it does not describe the robots themselves.
• limited: 'Limited' is an adjective that describes a restriction, which does not apply to the subject of robots.
• sick: 'Sick' is an adjective that describes a state of health, which does not relate to the robots being developed.
• short: 'Short' is an adjective that describes length or duration, which does not apply to the subject of robots.
• social: 'Social' is an adjective that describes interactions among people, which does not describe the robots being developed.
• patients: 'Patients' is a plural noun referring to individuals receiving medical care, which does not fit the context of robots.

Correct answer: social

Explanation: The word 'social' is an adjective that describes interactions among individuals, fitting grammatically and contextually as it relates to the signals robots need to interpret.

Meaning: 'Social' refers to interactions or relationships among individuals.

Wrong options:

• tasks: 'Tasks' is a noun that refers to activities, which does not fit as it does not describe the type of signals.
• limited: 'Limited' is an adjective that describes a restriction, which does not apply to the type of signals.
• sick: 'Sick' is an adjective that describes a state of health, which does not relate to the type of signals.
• short: 'Short' is an adjective that describes length or duration, which does not apply to the type of signals.
• helpers: 'Helpers' is a plural noun that refers to those who assist, which does not describe the type of signals.
• patients: 'Patients' is a plural noun referring to individuals receiving medical care, which does not fit the context of signals.