What adaptations enable intertidal organisms such as barnacles and limpets to withstand wave splash and drying?

What adaptations enable intertidal organisms such as barnacles and limpets to withstand wave splash and drying?

• A. Strong attachment mechanisms (byssal threads or cement); rigid shells or protective coverings; tolerance to desiccation and temperature swings.
• B. Weak attachment; no shells; intolerance to drying.
• C. Photosynthesis during low tide; escape into air.
• D. Burrow during high tide only.

Answer: (A)