What is the best reason it is to practice a presentation in front of a friend or family member? to receive validation for your ideas and opinions to determine which side of the topic you want to argue to decide the best way to incorporate jokes or anecdotes to get feedback on strong and weak points in your presentation

comfortable

explanation:

one type of the adjectives is predicate adjective. a predicate adjective is an adjective which follows a linking verb and modifies or refers back to the main subject of that linking verb.

it usually is used just before the noun it modies.

here in this example:

'penguins seem comfortable in the coolest habitats', comfortable is the predicate adjective which follows the linking verb 'seem' and modifies the noun.