The correct answer is A. Lindísima
Step-by-step explanation:
In the Spanish language, the word "es" refers to "is" (verb to be) that is used to describe nouns. This means in the sentence "toda la ropa...es..." the purpose is to describe clothes (ropa) that is a singular feminine noun. According to this, the word that follows the verb "es" should be either an adjective or a noun. Besides this, in the Spanish language, the adjective or noun describing another word must agree in number and gender with this.
Therefore, the word that correctly fills the blank is "lindísima" because this adjective is singular and feminine like "ropa", you can know this because "ropa" and "lindísima" end in -a which is common in feminine nouns, and also they end in a vowel rather than in "-s" which would indicate plural.