Answer:
by providing that marathon running is very strenuous
Explanation:
An adjective phrase is a group of words that describe a noun or pronoun in a sentence. The adjective phrase can be placed before, or after, the noun or pronoun in the sentence.
Example:
The painter is a person of immense talent.
(Person = noun)
(Of immense talent = adj. phrase)
Source: yourdictionary.com
The web page serves a persuasive purpose would be google
