Question

which of these would a tempest be most likely to do? make the stars visible cause a frozen pond to thaw help flowers to grow blow small branches off trees

Explanation:

A tempest is a violent storm. Storms have strong winds which can blow small branches off trees. A tempest would not make stars visible (as it is a storm, likely with clouds), nor would it cause a frozen pond to thaw (that requires warmth, not a storm), and it would not help flowers grow (storms can damage plants).

Answer:

blow small branches off trees