Answer:
1. A
2.C
3.D
4.B
Explanation:
1. A You think an El Nino may be starting because you observe that sea surface temperatures are increasing off the coast of Peru.
2.C The easterly trade winds are holding strong throughout the arrays, suggesting no El Nino yet.
3.D The decreasing air pressure over the eastern part of the TAO array suggest an El Nino may be coming.
4.B The extended high pressure in the TRITON array is beginning to reduce suggesting the El Nino may be ending soon.