Read the following to give the correct answer.
1.
| Assertion (A): | A mean solar day is the average time the Sun takes to return to the same highest position in the sky. |
| Reason (R): | The actual solar day varies in length throughout the year, so its average is taken to define a mean solar day. |
2.
| Assertion (A): | A lunar month lasts about 29.5 days. |
| Reason (R): | This is the time the Moon takes to move through all its phases once. |