Why the other options are wrong:

• inside a public library.: The library is beside the school, not the centre’s location.
• at a swimming complex.: The report explicitly says the building has no swimming pool.
• beside an airport terminal.: No airport terminal is mentioned.

Correct Answer: six weeks.

Why this is correct: The stated course duration is six weeks.

Why the other options are wrong:

• two weeks.: Two classrooms describe rooms, not weeks.
• six months.: The course lasts weeks, not months.
• one year.: No year-long course is announced.

Correct Answer: clear communication.

Why this is correct: Students practise giving instructions clearly.

Why the other options are wrong:

• physical strength.: The report explicitly contrasts communication with physical strength.
• underwater navigation.: There is no underwater training.
• flight endurance.: Activities occur on the ground and do not involve flight.

Correct Answer: local engineers.

Why this is correct: Local engineers volunteer as supervisors.

Why the other options are wrong:

• visiting astronauts.: No visiting astronauts are identified.
• library customers.: Library customers are not named as supervisors.
• course graduates.: The first course has not yet produced graduates.

Correct Answer: without advance booking.

Why this is correct: Saturday visits do not need advance booking.

Why the other options are wrong:

• only after completing the course.: The course and family visits are separate offers.
• only with an education grant.: The grant purchased equipment; it is not a visitor requirement.
• after passing a strength test.: No strength test is required.