Question

How have astronomers formed their ideas about the layers of the sun?(1 point)
Responses

using theoretical models combined with known data
using theoretical models combined with known data

developing mathematical models based only on known data
developing mathematical models based only on known data

observing all the layers during total solar eclipses
observing all the layers during total solar eclipses

making direct observations of the sun's layers

Answer 1

Astronomers have formed their ideas about the layers of the sun **using theoretical models combined with known data**.