Which of the following climates has a summer with enough rain to sustain trees?

The climate that features a summer with sufficient rainfall to support tree growth is the Boreal Forest in high-latitude climates. This region, also known as taiga, is characterized by its short growing seasons with relatively warm summers and adequate moisture. The precipitation is typically in the form of rain during the summer months, which allows trees, especially coniferous species like spruce and fir, to thrive.

The presence of summer rain is essential for sustaining not just trees, but the entire ecosystem associated with boreal forests. This contrasts with other climates mentioned, such as the dry midlatitude climates, which may experience long dry periods that inhibit tree growth, or the high-latitude ice sheet regions and tundra, which have extreme cold, limited warmth, and very short growing seasons that do not supply the necessary moisture or climate conditions for trees. In sum, the unique combination of summer warmth and precipitation in the Boreal Forest supports the growth of forests, distinguishing it from the other climate types.