Immediate Cause — Crowded Beaches:\nStatement: The beaches are now full of families on holiday, taking surfing lessons, and doing para-sailing and other leisure activities.\nWhich of the following is the most immediate cause of this effect?

Introduction / Context:
We observe a sudden surge in beach activity. Among multiple plausible drivers, we must pick the most immediate catalyst that directly increases same-day turnout.

Given Data / Assumptions:

• Effect: Beached teeming with holidaying families and learners.
• Candidate causes: weather change, stress, income, advertising, cheaper travel.

Concept / Approach:
Short-term spikes in outdoor attendance correlate most directly with favourable weather. Income growth and advertising act over longer horizons; stress is too diffuse; travel costs affect destination choice more than punctual footfall.

Step-by-Step Solution:

Verification / Alternative check:
Bad weather would empty beaches even with ads and high incomes; conversely, a sudden sunny spell quickly draws crowds—confirming weather’s immediacy.

Why Other Options Are Wrong:
(b) Stress is chronic and non-specific; (c) income influences affordability but not immediate timing; (d) ads need time to convert; (e) cheaper international travel could divert tourists away rather than pack local beaches.

Common Pitfalls:
Confusing long-run demand shifters with immediate attendance drivers.

Final Answer:
Option A: The weather has become very pleasant.