What is the most effective sound to add to a scene in order to make the audience feel at ease
a) leaves crunching
b) owls hooting
c) winds blowing
d birds chirping

The correct answer is D. Birds chirping

Explanation:

In movies, plays and similar it is common to add sounds to reinforce certain ideas and cause and effect of the audience this includes sound such as barks of dogs, owls hooting, winds blowing, the sound of an ambulance, etc that are suitable in different cases and serve for different purposes. In the case of trying to make the audience feel at ease or free of any worry the most effective sound from the options provided is birds chirping because for most audiences this sound represents a bright new day, a beautiful landscape or that everything is okay and therefore this would cause ease. On the other hand, other sounds such as leaves crunching, owls hooting or winds blowing ae mainly use to create suspense or anxiety for what could happen next.

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)