the words “clinician” and “physician” are synonyms and so they can be used interchangeably.

the adjectives “many” and “much” are correctly used in: many sports arena; much physical activities.

the following words are singular and plural forms: injury – injuries; require – requires; activity – activities.

the words “prerequisites”, “moderate”, “attending”, “often” and “university” are examples of true cognates.

the sentence “Certain amount of physical activity is considered an important element…” is in the active voice.