is the group of words in bold a phrase or a clause? the most successful advertising slogans are those that…

is the group of words in bold a phrase or a clause? the most successful advertising slogans are those that have the ability to endure, such as \just do it\ or \when you care enough to send the very best.\ phrase clause
Answer
Brief Explanations:
Una cláusula tiene un sujeto y un verbo. La expresión en negrita "The most successful advertising slogans are those that have the ability to endure" tiene un sujeto ("The most successful advertising slogans") y un verbo ("are"), mientras que una frase no tiene un sujeto - verbo completo.
Answer:
clause