Explanation-1

The artist where paintings you admire is hosting an exhibition next month, which will feature some of her most celebrated works from the past decade.

A) No change

B) that

C) whose

D) whom

Explanation-2

The car whom I bought last year has been very reliable; I’ve driven it across the country without any mechanical issues or significant problems so far.

A) No change

B) which

C) where

D) that

Explanation-3

My sister, where lives in Paris, is coming to visit for the holidays. We’re excited to show her around our city and spend quality time together.

A) No change

B) that

C) who

D) whom

Explanation-4

The event, that was scheduled for Saturday has been postponed due to weather conditions, so we will need to plan for a later date to reschedule.

A) No change

B) where

C) which

D) when

Explanation-5

The flowers that bloom in spring are always a beautiful sight; they bring color to our gardens and remind us of the warmer days ahead.

A) No change

B) which

C) who

D) whose